You may receive the above error while taking the backup of your database using SQL Server Management Studio on a Windows server with Plesk.
The cause of this issue is the transaction logs are reached to the configured size or disk-space does not have sufficient available space.
To resolve this issue, please refer to the following steps.
- Connect the VPS via RDP.
- Connect database with SQL Server Management Studio
- Go to Databases >> Right-click on your database >> Tasks >> Back Up
- At the General page, select Backup type: Transaction Log
- At the Media Options page, select Truncate the transaction log and press OK button.