stop backup jobs stucked at "Stopping"

Backup your Veeam Backup Database
Open your DB with pgAdmin

GO TO
Servers > Postgresql 15  > Databases > YOUR_VEEAM_BACKUP_DB > Schemas > Tables > backup.model.jobsessions

                        run following query
                        SELECT * FROM public."backup.model.jobsessions" WHERE job_name = 'YOUR_BACKUP_JOB_NAME';
                            //find the UUID with state 4 and copy uuid//

                    //replace xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx with the copied uuid from first query and run following//
                        UPDATE public."backup.model.jobsessions"
                        SET state = -1
                        WHERE job_name = 'YOUR_BACKUP_JOB_NAME' AND id IN ('xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx');