When OPcache settings are too aggressive, it can happen that responses are not updated, for example resulting in changes in the Panel not being updated (e.g the user language or the display language).
Adding this line in the
.htaccess has helped users fixing this issue:
php_value opcache.revalidate_freq 0
"The JSON response from the API could not be parsed. Please check your API connection."
When this error occurs, check with your hosting provider if
HTTP PATCH requests are disabled.