Vaishnav AV-FT, thank you for posting this question. As the error mentions, it seems that the lock acquired by the receiver was lost. To overcome this issue, a good option would be to use ServiceBusSessionProcessor which can be created with ServiceBusSessionProcessorOptions.MaxAutoLockRenewalDuration Property enabling the session locks to be renewed automatically.
The following link has a sample for ServiceBusSessionProcessor - Using the session processor
Please let me know if you have any questions.