Cannot login into the Notes app for Android

I can’t login into the Nextcloud Notes app for Android, I have this log file.

Nextcloud version: 21.0.0.18
Operating system and version: Ubuntu Server 20.04.2 LTS (kernel 5.4.0-1032-raspi armv7l)
Apache or nginx version: Apache 2.4.41
PHP version: 7.4.3

Please read the following information: