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That’s tricky issue. The problem is in how you typed your command:
Wrong:
celery –A runLogProject worker –loglevel=INFO
Correct:
celery -A runLogProject worker -loglevel=INFO
It’s almost impossible to spot a difference. In first to pass parameters -A and -loglevel are used dashes (ascii code: 8211) but should by hyphens (ascii code 45).
If you are using OSX, it could be triggered because you pressed ALT together with hyphen/minus key or you just copy pasted it from some blog which uses weird autocorrect.
Source:stackexchange.com