Event details:

Event ID: 32364

Hyper-V Replica failed to query change tracking for virtual machine '<VMName>'. (Virtual machine ID <VHD ID>) (VHD ID <VhdID>) - Error: The system cannot find the path specified. (0x80070003)

Event ID:29244

Finished resynchronization operation on VHD = '<VHD Path>' of VM 'Resync'. Blocks sent = y. Duration = x seconds. Result 0x80070003. (Virtual machine ID <VMId>)

Event ID: 32572

Hyper-V failed to resynchronize changes for virtual machine '<VMName>': The system cannot find the path specified. (0x80070003). (Virtual Machine ID <VMId>)

Possible Causes:

Destination server connected, resync is in progress and primary storage is inaccessible (either permissions issue or drive not mounted). Thus reads are failing.

Resolution:

Address the storage issue (permission, lack of space etc).  After the corrective action,  resume the replication.