Error reading source block in the CBM

Hello Pro, I have problem in opening my Applications in the CBM. I am getting this error when it starts to read the application within sometime of loading. For your information, all the cables are good and I am able to ping all nodes from engineering station. Please enrich me with some ideas. Thank you.

The source code could not be read.
The object may have been deleted from another engineering station.
Refreshing the project may remedy this error.
SouceBlock: BasicLib
ErrorMessage: Object not found
