Issue Error in Web Access Page 'toLowerCase'

[landrade21]

Trying to access my Plesk Server using Google, Plesk or Opera Web Browsers in Windows 11 the plesk page show the error "Internal errorTypeError: Cannot read properties of undefined (reading 'toLowerCase')" this at the moment to press login button, Address, port, Usr and password are correct, in others pc works just fine, this pc is new.
Thanks in advace for your comments.

 

[Sebahat.hadzhi]

Hello, @landrade21. Do you perhaps have an antivirus program (e.g. Kaspersky) installed on the device you are encountering the error from? If yes, please try temporarily disabling it or include the Plesk URL in the exception list. I hope that helps.