[wp-trac] [WordPress Trac] #48599: Warning: count(): Parameter must be an array or an object that implements Countable in ../wp-admin/includes/plugin.php on line 1392

[WordPress Trac]

#48599: Warning: count(): Parameter must be an array or an object that implements
Countable in ../wp-admin/includes/plugin.php on line 1392
----------------------------+---------------------
 Reporter:  ispreview       |       Owner:  (none)
     Type:  defect (bug)    |      Status:  new
 Priority:  normal          |   Milestone:  5.3.1
Component:  Administration  |     Version:  5.3
 Severity:  normal          |  Resolution:
 Keywords:  needs-patch     |     Focuses:  ui
----------------------------+---------------------

Comment (by ispreview):

 It's been found that disabling the "NextScripts: Social Networks Auto-
 Poster" plugin stops this warning. According to the author of that plugin:
 "Interesting enough, it’s not our bug. WordPress broke something in the
 add_submenu_page() function. It gives this warning if the last optional
 parameter is provided."

 Apparently a temporary fix will be introduced in the next plugin release,
 although WordPress still needs to fix the underlying issue.

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Ticket URL: <https://core.trac.wordpress.org/ticket/48599#comment:6>
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