Log to SQL server with Sa account. Run below query with relevant values.
USE <write the database name>;
GO
-- Truncate the log by changing the database recovery model to SIMPLE.
ALTER DATABASE <write the database name>
SET RECOVERY SIMPLE;
GO
-- Shrink the truncated log file to 10 MB.
DBCC SHRINKFILE (<Database Logical Name>, 10);
GO
-- Reset the database recovery model.
ALTER DATABASE <write the database name>
SET RECOVERY FULL;
GO
