If you are continuously getting JSON RPC errors on Velodrome, it is possible that the RPC server you are using is not configured correctly or is not compatible with Velodrome. To fix this issue, you should try changing the RPC server to one that is compatible with Velodrome. Additionally, you may need to configure the RPC server to ensure it is properly set up to work with Velodrome. This may involve ensuring the correct port numbers, authentication settings, and other configurations are set correctly. Once you have the RPC server set up correctly, you should be able to use Velodrome without any further issues.