Using MySQL as results DB for celery was failed due to connection string setup

[sambles]

OasisPlatform/src/conf/base.py

Lines 24 to 32 in 52d2214

	CELERY_RESULT_BACKEND = '{DB_ENGINE}://{DB_USER}:{DB_PASS}@{DB_HOST}:{DB_PORT}/{DB_NAME}{SSL_MODE}'.format(
	DB_ENGINE=settings.get('celery', 'db_engine'),
	DB_USER=urllib.parse.quote(settings.get('celery', 'db_user')),
	DB_PASS=urllib.parse.quote(settings.get('celery', 'db_pass')),
	DB_HOST=settings.get('celery', 'db_host'),
	DB_PORT=settings.get('celery', 'db_port'),
	DB_NAME=settings.get('celery', 'db_name', fallback='celery'),
	SSL_MODE=settings.get('celery', 'db_ssl_mode', fallback='?sslmode=prefer'),
	)

Error

File "/home/worker/.local/lib/python3.12/site-packages/pymysql/protocol.py", line 219, in raise_for_error err.raise_mysql_exception(self._data)
File "/home/worker/.local/lib/python3.12/site-packages/pymysql/err.py", line 150, in raise_mysql_exception raise errorclass(errno, errval) 
  sqlalchemy.exc.OperationalError: (pymysql.err.OperationalError)
  (1044, 'Access denied for user 'celery'@'%' to database 'celery""'')
  (Background on this error at: https://sqlalche.me/e/20/e3q8) 

worker version: 2.3.14
MySQL: 8.3.0
Run in oasis eval (docker compose)

seems like ?sslmode=prefer is not supported in MySQL and using CELERY_DB_SSL_MODE="" was causing the error

--> CELERY_DB_SSL_MODE= works