Mendix SSO request handlers not starting

Hi I'm working on an app in a free enviroment and after nine months of use the login handlers broke. Now if I try to login my app an error message on a blank page will show up. This is the log of the login event: If we disable the SSO we are able to access the app, but this is no solution since it is needed to actually use it. Is there a way to fix the handlers? We tried reverting the versions, deleted and reinstalled the SSO, changing the settings. This event appeared after a publish that did not involve the SSO, or security for that matter.
1 answers

Did you deploy a newer version of the app lately?