While trying to load a mp4 video (HTML5 was chosen), I got the message The server returned an invalid JSON response.
JCE JCE Pro 2.9.55
Joomla 5.0.1
Strange: I did the the same on 4 other sites without any problem.
JCE JCE Pro 2.9.55
Joomla 5.0.1
Strange: I did the the same on 4 other sites without any problem.