This error appears right after a job configuration or when trying to start the job run.
It means the following misconfiguration: the Agent is added to two different job. In one of the jobs it's configured to sync a folder with Read-Only permissions, while in the other - its parenting or child folder with Read_write permissions.
The only fix for it is to revise the directories that the Agent syncs and reorganize the jobs for it. The best way to see them is to go To AGENTA tab -> Agent -> Job and review its jobs.