4031, 'The client was disconnected by the server because of inactivity. See wait_timeout and interactive_timeout for configuring this behavior

[EllenEyes]

Describe the bug
msyql interactive_timeout=30s，wait_timeout=30s
database connection failed aftrer wait_timeout
config PRE_PING doesnt works。

django's backend
dj_db_conn_pool.backends.mysql

Environment

• Python Version:
  python3.12
  Django==3.0.3
  django-db-connection-pool==1.2.5

Traceback
Post traceback here.
4031, 'The client was disconnected by the server because of inactivity. See wait_timeout and interactive_timeout for configuring this behavior.
Optional: SQL and parameters
Post SQL and parameters here, Pay attention to hiding private information.
database settings here:
'default': {
#'ENGINE': 'django.db.backends.mysql',
'ENGINE': 'dj_db_conn_pool.backends.mysql',
'NAME': env_config.mysql_commodity_dbname,
'USER': env_config.mysql_commodity_username,
'PASSWORD': env_config.mysql_commodity_password,
'HOST': env_config.mysql_commodity_host,
'PORT': env_config.mysql_commodity_port,
'POOL_OPTIONS': {
'POOL_SIZE': 10,
'MAX_OVERFLOW': 5,
'RECYCLE': 2 * 60 * 60,
'PRE_PING': True,
'TIMEOUT': 60
}
}
PRE_PING doesnt works。