TYPO3 Core

Can you please post the Services.yaml configuration of your custom chronotours_theme extension?

Yes, the CsvFileProcessor is really there. It is not referencend anywhere at the moment.

Here is the content of the Service.yaml

services:
  _defaults:
    autowire: true
    autoconfigure: true
    public: false

  In2code\Powermail\:
    resource: '../Classes/*'

As I mentioned this issue happend on two different servers. The first one is the dev environment and the second one is the production environment. The problem first occurred at the production server after updating from 10.4.20 to 10.4.21 using the install tool. Since it was the production server and none of the suggested solutions worked, we restored the system from a backup. Unfortunaly there are no more error messages or log files from the production server. After that we tried to reproduce the issue at the Dev-Server. The above error message and the stack trace come from the dev server. The errors on both systems were almost identical except for the file referenced in the message. On the production server the file was a controller.

I checked the dev server today and the problem seems to be gone. No changes have been made since this report was submitted.

closing the issue as the error is gone