Replies: 0
After updating to WP v4.73, there was an error with Ontrapages plugin:
array() expects parameter 1 to be a valid callback, class 'ONTRApages' not found in /wp-includes/class-wp-hook.php on line 298
I uninstalled and deleted the plugin, and then reinstalled, but I get this message:
Installation failed: The package could not be installed.
So I tried to download the plugin, unzip it and place the unzipped plugin folder in the plugins folder of my site but get a message:
The plugin ontrapages/ontrapages.php has been deactivated due to an error: The plugin does not have a valid header.
Can you please advice on how to fix? Thank you!