I have a managed package I want to uninstall so that I can install as an unmanaged package. Part of the package is a Permission Set. When I try to uninstall the package I get an error that says:

"This permission set is assigned to one or more users. You can only delete permission sets that aren't assigned to users."

I checked and there are no users assigned.

I also tried to remove the Permission Set first and got a differrent error that says:

"The value of the 'CsrfDelId' parameter contains a character that is not allowed or the value exceeds the maximum allowed length. Remove the character from the parameter value or reduce the value length and resubmit. If the error still persists, report it to our Customer Support team. Provide the URL of the page you were requesting as well as any other related information."

I reported to customer support but they said they won't do anything because it's a developer org.

I have a managed package I want to uninstall so that I can install as an unmanaged package. Part of the package is a Permission Set. When I try to uninstall the package I get an error that says:

"This permission set is assigned to one or more users. You can only delete permission sets that aren't assigned to users."

I checked and there are no users assigned.

I also tried to remove the Permission Set first and got a differrent error that says:

"The value of the 'CsrfDelId' parameter contains a character that is not allowed or the value exceeds the maximum allowed length. Remove the character from the parameter value or reduce the value length and resubmit. If the error still persists, report it to our Customer Support team. Provide the URL of the page you were requesting as well as any other related information."

I reported to customer support but they said they won't do anything because it's a developer org.