Diagnosis
The previous run of the current subchain, &V3&, is not yet complete.This leads to communication errors with the metachain called, &V4&.

System Response
The current run of the metachain is cancelled.

Procedure
End the previous run of the subchain, or wait until the run iscomplete.
It does not matter whether the run was successfully completed or not.
Restart the metachain.
We recommend scheduling a longer time period between the runs of themetachain in order to avoid this situation.