Could not establish connection to the Collabora Online server (Using "Collabora Online - Built-in CODE Server" option)

Hi, in aio you should not need the richdocumentscode app. Please disable that again! Instead you should enable the collabora container cia the aio interface on port 8080. if that does not work, please follow How to debug problems with Collabora and/or Talk · nextcloud/all-in-one · Discussion #1358 · GitHub