I am currently having the following error  when doing backup to rman
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RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on t1 channel at 05/04/2023 09:17:47
ORA-19506: failed to create sequential file, name="db_DBNAME_xx_xx_1_2", parms=""
ORA-27028: skgfqcre: sbtbackup returned error
ORA-19511: non RMAN, but media manager or vendor specific failure, error text:
sbtbackup: avtar failed with error code 158

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Could you please advise how I can resolve this 

Thank you