I have had this error happen to me twice now due to mandatory WordPress core updates. Changing the above line to $this->widgets[ $widget ] = new $widget( $widget, $widget ); does seem to fix it. Could someone perhaps just roll this into whatever the next version of WordPress is? I don’t know whether a plugin is causing it or whatever, but it breaks backward compatibility in a way that feels very unnecessary given the simplicity of the fix.
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This reply was modified 2 years, 1 month ago by nucleonic.