Nextcloud 20.0.11 has stopped working OnlyOffice

Good afternoon, after updating to Nextcloud 20.0.11 OnlyOffice stopped working. When pressed, just a white screen and nothing else. What can be done?

Hi @Detsle, have you some error into nextcloud logs ?
How onlyoffice is installed on your server ?( manual installation of onlyofficer server ? Community Document Server app ? docker ? )