@dcmnghs There is a problme in your Data-Base. Contact the support and they will fix it.

@Fae The General Error comes only when doing any modifications is the Portal Page.

@Fae Yes, the software is already reinstalled ny updating to v4.2.11 from v4.2.8. I didn't try to add a new site. How can I delete the existing Portal from the software or from the system files ?...

@Fae I'm using Omada SDN Controller v4.2.11 locally and the same error was also in v4.2.8

Dear Guys, I am facing a problem that I can't modify ot edit anything in the portal page. alwats receiving General Error. How Can Solve this problem or even to remove the exsiting portal page and...

@R1D2 which means both methods are correct. At the end I hope this discussion is helpful for others :)