On line 400 either the filterFormat is invalid or the value is invalid. You could start by looking for the strings in your language files. In en-GB they are like this:
What do you have in administrator/language/fr-FR/joomla.ini?
Code:
DATE_FORMAT_FILTER_DATE="Y-m-d"DATE_FORMAT_FILTER_DATETIME="Y-m-d H:i:s"Statistics: Posted by ceford — Thu May 02, 2024 3:56 pm