The transaction log for database 'tempdb' is full

I have only read permission to the database I'm querying in. The same query was working for since yesterday but today I am encountering the below error in sql server management studio.

The transaction log for database 'tempdb' is full. To find out why space in the log cannot be reused, see the log_reuse_wait_desc column in sys.databases

Any thoughts or suggestions are much appreciated. Thanks in advance!!