{"id":19016841,"date":"2026-09-10T16:30:00","date_gmt":"2026-09-10T16:30:00","guid":{"rendered":"https:\/\/wordpress.org\/support\/topic\/error-500-on-editing-posts\/"},"modified":"2026-09-10T16:30:00","modified_gmt":"2026-09-10T16:30:00","slug":"error-500-on-editing-posts","status":"publish","type":"topic","link":"https:\/\/wordpress.org\/support\/topic\/error-500-on-editing-posts\/","title":{"rendered":"Error 500 on editing posts"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">We have been frequently unable to edit posts on a site with this plugin activated. If I deactivate, the app then we are back in business.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Setup: WordPress (multisite) &#8211; WP version 7.1<br \/>Theme: Divi5<br \/>Subsite installs of WPMobile to show the app in various languages (We use MLP for multiple language sites).<br \/>This seems to have come about since the latest update in August. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">My debug log shows this:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[10-Sep-2026 16:13:29 UTC] PHP Warning: Undefined array key &#8220;uk&#8221; in \/usr\/www\/users\/xxx\/famvin-org\/wp-content\/plugins\/wpappninja\/inc\/admin\/ui\/options.php on line 943<br \/>[10-Sep-2026 16:13:29 UTC] PHP Warning: Attempt to read property &#8220;name&#8221; on null in \/usr\/www\/users\/nxxx\/famvin-org\/wp-content\/plugins\/wpappninja\/inc\/admin\/ui\/options.php on line 3399<br \/>[10-Sep-2026 16:13:29 UTC] PHP Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in \/usr\/www\/users\/xxx\/famvin-org\/wp-content\/plugins\/wpappninja\/inc\/admin\/ui\/options.php on line 3399<br \/>[10-Sep-2026 16:15:15 UTC] Cron reschedule event error for hook: wpappninjacron, Error code: invalid_schedule, Error message: Event schedule does not exist., Data: {&#8220;schedule&#8221;:&#8221;wpappninja_every_three_minutes&#8221;,&#8221;args&#8221;:[],&#8221;interval&#8221;:60}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br \/><\/p>\n","protected":false},"template":"","class_list":["post-19016841","topic","type-topic","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/19016841","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic"}],"about":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/19016841\/revisions"}],"wp:attachment":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/media?parent=19016841"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}