If you have a problem, you should not only dump an error message, but you should also give the context the error occurs. For instance, does the error in a specific operation in the application? Or is it completely random?
If the error is random, it is likely to be a (transient) network problem.
If the error is tied to a specific operation in the application, it is more likely to be a bug in SQL Server or in the client API. If it is a bug in SQL Server, you should check the SQL Server errorlog to see if there are any related errors like a stack dump.