I am working on material studio 2020, CASTEP module in window 10, when I optimize the geometry, I am getting this message at each job failure

[mpiexec@Rahat-Saqfi] ..\\hydra\\pm\\pmiserv\\pmiserv_cb.c (863): connection to proxy 0 at host Rahat-Saqfi failed

[mpiexec@Rahat-Saqfi] ..\\hydra\\tools\\demux\\demux_select.c (103): callback returned error status

[mpiexec@Rahat-Saqfi] ..\\hydra\\pm\\pmiserv\\pmiserv_pmci.c (520): error waiting for event

[mpiexec@Rahat-Saqfi] ..\\hydra\\ui\\mpich\\mpiexec.c (1149): process manager error waiting for completion

Has anybody seen it before? Any suggestions for how to resolve it?