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  3. 1.2.1

Subscribe Form by Arrow Plugins 1.2.1

Does "Subscribe Form by Arrow Plugins" work with WordPress 4.9.4 and PHP 7.0.16? A smoke test was performed on .

Summary

Errors
848PHP notices
1JavaScript exceptions
All test pages loaded successfully
No resource errors
Performance

Memory usage: 41.77 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: insignificant.
The plugin didn't make the site noticeably slower.

Environment
WordPress version4.9.4
PHP version7.0.16
MySQL version5.7.17
PHP memory limit256M
Plugin Info
Last updated
Active installs 3,000+
WordPress.org page https://wordpress.org/plugins/wp-subscribe-form/
Badges

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Pages 7

Plugins ‹ Test site — WordPress

Page screenshot: Plugins ‹ Test site — WordPress
URL /wp-admin/plugins.php?activate=true&plugin_status=all&paged=1&s=
Requested URL /wp-admin/plugins.php?action=activate&plugin=wp-subscribe-form%2Findex.php&plugin_status=all&paged=1&s&_wpnonce=83ca3e8e32
Aspect after-activation
HTTP status 200 OK
Load time 0.092 s
Memory usage 2.96 MiB
JS errors None
Resource errors None

Subscribe Forms

Page screenshot: Subscribe Forms
URL /wp-admin/edit.php?post_type=sfba_subscribe_form
Aspect menu-item
HTTP status 200 OK
Load time 0.157 s
Memory usage 2.98 MiB
JS errors None
Resource errors None

Subscribe Forms → Add New

Page screenshot: Subscribe Forms → Add New
URL /wp-admin/post-new.php?post_type=sfba_subscribe_form
Aspect menu-item
HTTP status 200 OK
Load time 0.085 s
Memory usage 3.03 MiB
JS errors None
Resource errors None

Subscribe Forms → Subscription Settings

Page screenshot: Subscribe Forms → Subscription Settings
URL /wp-admin/edit.php?post_type=sfba_subscribe_form&page=sfba_subscription_settings
Aspect menu-item
HTTP status 200 OK
Load time 0.062 s
Memory usage 3.07 MiB
JS errors None
Resource errors None

Subscribe Forms → Subscribers List

Page screenshot: Subscribe Forms → Subscribers List
URL /wp-admin/edit.php?post_type=sfba_subscribe_form&page=sfba_subscribers_list
Aspect menu-item
HTTP status 200 OK
Load time 0.085 s
Memory usage 3.05 MiB
JS errors None
Resource errors None

Subscribe Forms → Support

Page screenshot: Subscribe Forms → Support
URL /wp-admin/edit.php?post_type=sfba_subscribe_form&page=sfba_form_support
Aspect menu-item
HTTP status 200 OK
Load time 0.109 s
Memory usage 3.08 MiB
JS errors 
[
    {
        "message": "ReferenceError: Can't find variable: Modernizr",
        "trace": [
            {
                "file": "/wp-admin/edit.php?post_type=sfba_subscribe_form&page=sfba_form_support",
                "line": 214,
                "function": ""
            },
            {
                "file": "/wp-admin/load-scripts.php?c=0&load%5B%5D=jquery-core,jquery-migrate,utils&ver=4.9.4",
                "line": 2,
                "function": "each"
            },
            {
                "file": "/wp-admin/load-scripts.php?c=0&load%5B%5D=jquery-core,jquery-migrate,utils&ver=4.9.4",
                "line": 2,
                "function": "each"
            },
            {
                "file": "/wp-admin/edit.php?post_type=sfba_subscribe_form&page=sfba_form_support",
                "line": 211,
                "function": ""
            },
            {
                "file": "/wp-admin/load-scripts.php?c=0&load%5B%5D=jquery-core,jquery-migrate,utils&ver=4.9.4",
                "line": 2,
                "function": "i"
            },
            {
                "file": "/wp-admin/load-scripts.php?c=0&load%5B%5D=jquery-core,jquery-migrate,utils&ver=4.9.4",
                "line": 2,
                "function": "fireWith"
            },
            {
                "file": "/wp-admin/load-scripts.php?c=0&load%5B%5D=jquery-core,jquery-migrate,utils&ver=4.9.4",
                "line": 2,
                "function": "ready"
            },
            {
                "file": "/wp-admin/load-scripts.php?c=0&load%5B%5D=jquery-core,jquery-migrate,utils&ver=4.9.4",
                "line": 2,
                "function": "K"
            }
        ]
    }
]
Resource errors None

Test site – Just another WordPress site

Page screenshot: Test site – Just another WordPress site
URL /
Aspect front-page
HTTP status 200 OK
Load time 0.079 s
Memory usage 2.73 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.132 s0.056 s-0.076 s2.97 MiB3.01 MiB+ 41.02 KiB
/wp-admin/edit.php0.103 s0.112 s+0.009 s3 MiB3.04 MiB+ 41.34 KiB
/wp-admin/post-new.php0.192 s0.092 s-0.100 s3.07 MiB3.12 MiB+ 52.16 KiB
/wp-admin/upload.php0.084 s0.094 s+0.010 s2.9 MiB2.94 MiB+ 41.54 KiB
/wp-admin/options-writing.php0.099 s0.095 s-0.004 s2.89 MiB2.93 MiB+ 41.54 KiB
/wp-admin/media-new.php0.050 s0.082 s+0.032 s2.88 MiB2.92 MiB+ 41.54 KiB
/wp-admin/edit-tags.php?taxonomy=category0.090 s0.088 s-0.002 s2.92 MiB2.96 MiB+ 41.85 KiB
/wp-admin/post-new.php?post_type=page0.166 s0.191 s+0.025 s3.07 MiB3.12 MiB+ 44.9 KiB
/wp-admin/options-discussion.php0.080 s0.078 s-0.002 s2.89 MiB2.93 MiB+ 41.54 KiB
/wp-admin/edit-comments.php0.078 s0.118 s+0.040 s2.93 MiB2.97 MiB+ 42.16 KiB
/0.093 s0.132 s+0.039 s2.7 MiB2.73 MiB+ 29.91 KiB
Average 0.106 s0.103 s-0.003 s2.93 MiB2.97 MiB+ 41.77 KiB

Additions

Things that the plugin adds to the site. This section is not intended to be comprehensive. The test tool only looks for a few specific types of added content.

Database Tables 2

Options wp_options 1

Custom Post Types 1

ID Name
sfba_subscribe_formSubscribe Forms

Meta Boxes 

{
    "sfba_subscribe_form": {
        "sfba_shortcode_meta_box": "Shortcode",
        "sfba_form_showcase_meta_box": "Step 1: Select Subscribe Form Template",
        "sfba_form_load_form": "Customization & Subscription Settings"
    }
}

PHP Error Log 848 lines

[07-Feb-2018 09:28:11 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-enqueue-scripts.php on line 9
[07-Feb-2018 09:28:11 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-enqueue-scripts.php on line 24
[07-Feb-2018 09:28:12 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-enqueue-scripts.php on line 9
[07-Feb-2018 09:28:12 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-enqueue-scripts.php on line 24
[07-Feb-2018 09:28:12 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-enqueue-scripts.php on line 9
[07-Feb-2018 09:28:12 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-enqueue-scripts.php on line 24
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: post in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 60
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 60
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: post in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 116
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 116
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: post in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 176
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 176
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: post in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 236
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 236
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: post in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 296
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 296
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: post in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 355
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 355
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: post in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 415
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 415
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: post in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 476
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 476
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: post in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 541
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 541
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: post in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 601
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 601
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: post in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 661
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 661
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: post in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 721
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Trying to get property of non-object in /wp-content/plugins/wp-subscribe-form/includes/sfba-save-post-meta.php on line 721
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 313
[07-Feb-2018 09:28:13 UTC] PHP Notice:  Undefined variable: s in /wp-content/plugins/wp-subscribe-form/includes/sfba-post-meta-boxes.php on line 315

(+748 more lines)
See also: All tests for this plugin, How to Hide Subscribe Forms Admin Menus and Meta Boxes