Issue while license activation. JSON primitive error followed by invalid namespace error

My Sambapos was running just fine on the last working day, and the next day the license got logged out automatically, and when I tried to log in again, I got a “JSON Primitive” error followed by an “Invalid Namespace” error, and then the application crashed.

just to add my cp account is working and is showing my license active and valid

Any solutions?

You can solve this problem with updating SambaPOS to latest version.

Can you guide me the process to update to latest version?

Should I just download latest version from the site and run installer?

Correct. Take care the first start after the install may take a long time depending on your database size. Please take a backup before installing.