If anyone else need help, this worked for me:
(ioBroker in Docker Container)
`docker exec -it iobroker /bin/bash
`
`pkill -u iobroker`
`iobroker update`
`iobroker upgrade self`
...
### No existing issues.
- [X] There is no existing issue for my problem.
### Description
SyntaxError: Unexpected token '<', "<!doctype "... is not valid JSON
### Reproduction instruction
_No r...