Starting from version 8, Gurobi Compute Server can work with multiple Gurobi releases on the client-side.
The server automatically selects the appropriate runtime, depending on the version of the Gurobi Optimizer library that is used by the client program. The most common reason for the error message "No compatible runtime available for version X.X.X" is that there is a newer version on the client-side without a corresponding runtime on the server-side. Generally, this is because the client has been updated but the server has not.
For more details, please see How do I resolve the error "No compatible runtime available for version X.X.X" ?