[SOLVED] Seafile 8.0.4 ubuntu 18 after update to ubuntu 20 not work

After the system update, seafile does not work although there are no errors as such.

seahub.log

2021-06-22 16:16:51,372 [INFO] seafevents.db:74 create_engine_from_conf [seafevents] database: mysql, name: seahub-db
2021-06-22 16:16:51,374 [INFO] seafevents:118 is_audit_enabled audit is enabled
2021-06-22 16:17:18,403 [INFO] seafevents.db:74 create_engine_from_conf [seafevents] database: mysql, name: seahub-db
2021-06-22 16:17:18,700 [INFO] seafevents.db:74 create_engine_from_conf [seafevents] database: mysql, name: seafile-db
2021-06-22 16:17:19,275 [INFO] seafevents.app.config:126 load_file_history_config The file with the following suffix will be recorded into the file histo
ry: md,txt,doc,docx,xls,xlsx,ppt,pptx
2021-06-22 16:17:19,326 [INFO] seafevents.db:74 create_engine_from_conf [seafevents] database: mysql, name: seahub-db
2021-06-22 16:17:19,328 [INFO] seafevents:118 is_audit_enabled audit is enabled

thanks

sudo a2enmod ssl
sudo a2enmod proxy
sudo a2enmod proxy_balancer
sudo a2enmod proxy_http

problem solved

Could you mark the topic as solved?