Upgrade command breaks scheduler "add task" form

[mp-sschreiber]

TYPO3 version: 10.4.9 (composer)

I'm getting the following error when trying to create a new scheduler task:

TypeError
strpos() expects parameter 1 to be string, null given

in /var/www/html/vendor/helhum/typo3-console/Classes/Console/Mvc/Cli/CommandDispatcher.php line 95

It seems that your UpgradeCommand needs a cli environment to be loaded correctly as it calls CommandDispatcher::createFromCommandRun() in its constructor, leading to the error above in non-cli.

To clarify, I did not try to add your command as a scheduler task. The error happens once you open the form to add new tasks. Maybe just exclude it from scheduler?

[helhum]

CommandDispatcher must not be instantiated in contructor to avoid this error to happen.
The command should also be marked not schedulable in addition, just to be sure to avoid confusion.

[IchHabRecht]

Hi @mp-sschreiber,

The problem should be solved with the latest release of core_upgrader 1.3.1