Problem getting RPC to compile using mbed-os and Mbed studio

Hello there,

I am having trouble getting RPC serial to work. I have the code working in the online IDE using OS2. I try to make the code work in Mbed-Studio IDE with the latest mbed-os, but run into the error message:

[Error] Arguments.cpp@73,12: use of undeclared identifier ‘parse_pins’
[ERROR] ./OS-RPC_Serial/RPCInterface/mbed-rpc/Arguments.cpp:73:12: error: use of undeclared identifier ‘parse_pins’
return parse_pins(argv[index]);

I have searched the old forums, but all answers seamed to be for OS2?

Can anybody help me with this error? thanks in advance.
Eelco Dorrestijn