This type of error occurs when the databases Interbase and Firebird, aren’t in there default services.
The following tutorial explains how to reference them to their services if the error happens to occur.
1. First we have to find the services file in the following directory.
2. Now open the services file and add the following lines:
gds_db 3050/tcp #InterBase Server
fd_db 3051/TCP #Firebird
3. After the restart your PC.