polfre

Thanks i have found the culprit. Password Policy & Complexity Requirements was the one. If you check the box “activate this policy”. The problem occurs.

To get a temporary solution you can do as follows:

Add to the Function.PHP file the following
// Enable WP_DEBUG mode
define( ‘WP_DEBUG’, true );
// Enable Debug logging to the /wp-content/debug.log file
define( ‘WP_DEBUG_LOG’, true );
// Disable display of errors and warnings
define( ‘WP_DEBUG_DISPLAY’, false );
@ini_set( ‘display_errors’, 0 );

This will write all the errors to a log file and they will no longer be displayed on the screen.
it might be that there is a: define( ‘WP_DEBUG’, true ); could be found in the WP_Config.PHP you have to set this to False.

If all the plugins are updated you could change everything back to the previous state.