Restore operation getting failed in RMAN please help on it

channel t1: ORA-27192: skgfcls: sbtclose2 returned error
- failed to close file

ORA-19511: Error received from media manager layer, error
text:

   We could not
read the checksum. (0:3:0)

ORA-19870: error while restoring backup piece
*****************************_bkp

ORA-19501: read error on file
"*****************************_bkp", block number 195761153 (block
size=512)

ORA-27190: skgfrd: sbtread2 returned erro channel t1:
starting datafile backup set restore