XF 1.4 Internal Server Error creating post with BB code


Active member
I was copy-and-pasting a long post with BB code on my about me and saved no problems. I went back to edit and tried to save and got error message. Also error message when toggling BB Code Editor button. No error shows up in my Cpanel error log.

Note: This is my test forum. I do have mod security but something shows in the error log when this happens.