【error】django.db.utils.OperationalError: (1193, "Unknown system variable 'storage_engine'")

DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql', # Add
'NAME': 'am',             # Or path to database file if using sqlite3.
'USER': 'probe',           # Not used with sqlite3.
'PASSWORD': '',                  # Not used with sqlite3.
'HOST': 'localhost',                      # Set to empty string for localhost. Not used with sqlite3.
'PORT': '3306',                      # Set to empty string for default. Not used with sqlite3.
'OPTIONS': {
'init_command': 'SET storage_engine=INNODB',
},
},
}

django.db.utils.OperationalError: (1193, "Unknown system variable 'storage_engine'")

"OPTIONS":{"init_command":"SET storage_engine=INNODB;"}

"OPTIONS":{"init_command":"SET default_storage_engine=INNODB;"}