It is only in special cases that admin may face like this error in OTJ Jira addon while trying to add a new Language or update language field.
As a workaround to solve this error, follow the steps below:
- Go to DataBase Admin
- Navigate your Jira Database
- Open the table “AO_BD1080_MY_LANGUAGE”
- Check for any null records, and replace them with your language name
- Save