Unable to connect to sql server on Ubuntu after MySQLAlchemy connection

**Context:** I have installed mysql-server on Ubuntu and was able to setup password for root account and also created a few accounts with all privileges. I was able to connect to any user or the root user using the usual

mysql -uroot -p

I enter my password and I connect to the databases. **Issue:** I have a python flask application that uses SQLAlchemy to connect to the database using a username that I created, with a password. That user has all privileges. After I ran my application, I am UNABLE to connect to any user account from the terminal but the SQLAlchemy connection works fine via the flask application. **Fixes tried** - I tried restarting the mysql service. - Turned off the flask application. - I tried restarting the linux host. I need to fix this issue and be able to connect to the mysql database from terminal as well as from the application (currently only application connects to the database).