Error in Power Pages on Registration, Login runtime errors

If you encounter errors while working with Power Pages, such as a "Something went wrong" issue during registration or login, there are steps you can take to troubleshoot the issue. To begin, disabling the Custom Error can provide more information about the error. Here are the steps:

Step 1- Go to https://make.powerpages.microsoft.com/ and select the appropriate environment, power page, and click on the 3 dots to open the Admin Center.

Step 2- In the Admin Center, you can disable the Custom Error to obtain details of the actual error that occurred.

By following the steps above, you can identify the root cause of the error and take steps to address it. This can help you troubleshoot runtime errors during registration or login while using Power Pages.

For more information and detailed steps, refer to the source link.