Error as 'object no longer exist' in PSQUERY for the Query process 'SSC_AUDIT_RPT_INA_PAX_V2'

We have a scheduled query, 'SSC_AUDIT_RPT_INA_PAX_V2', which runs four times at same time, each with a different process instance. Occasionally, one of these processes fails in production with the error message 'Object no longer exists'. There is no discernible pattern to this failure, as sometimes only one process fails, while at other times, all four processes succeed.

Could you please investigate this issue and provide insights into the potential causes and how we can resolve it.