Caller 70″ is Missing While Loading Data to PSA

Hi Experts,     I need help to solve this issue.

When checked in ST22 i found two runtime errors.

1. Name of runtime error:  RFC_DEBUGGING_NO_DIALOG_USER . (no exception)

2. Name of runtime error: DYNPRO_SEND_IN_BACKGROUND    

Exception:CX_SY_SEND_DYNPRO_NO_RECEIVER

Please provide me the solution.

Thank You & Kind Regards,  Manoj