What does this message mean?

I have seen this message in the log file many times
and I wish I could have some explanation.

Thank you in advance.

/data/workspace/workspace/wdmcserver_stable/src/wdphotodbmerger/NotificationListener.cpp:137: Calling ReadMessage()

Hello FedoraEX4,

I would suggest you to contact WD support to get assistance for this log file.

Refer the link provided below for contact information.