[Solved] Django Configurate celery error: django.db.utils.DatabaseError

Error on execution of asynchronous task: 

django.db.utils.DatabaseError: DatabaseWrapper objects created in a thread can only be used in that same thread. The object with alias ‘default’ was created in thread id 3047101641304 and this is thread id 3047208084584.



Original start command (under Windows):
celery -A xxx worker -l info -P eventlet (xxx is the project name)
Modified start command, celery version 4x:
celery -A xxx worker -l info -P solo

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