resource timesheet not showing new tasks

[Sam]

when the project manager add one task in the project and assign a resource
and then publish the project .
project manager is not receiving email . and shows job status

"Failed but not blocking Correlation"

and the resource cant see the tasks in his timesheet in that particular
period . and
tasks is showing in my tasks page.

resource has deleted the timesheet and created again but still no task in
that timesheet.