Unable to acquire connection! Avoid to use blocking commands in Async/JavaRx/Reactive handlers

Hi I am facing the bellow issue, I have enabled Async before in camunda modler. please help on this

Could not open JPA EntityManager for transaction; nested exception is org.redisson.client.RedisTimeoutException: Unable to acquire connection! Avoid to use blocking commands in Async/JavaRx/Reactive handlers. Try to increase connection pool size