Using debug50 in vanilla C/C++ workspace

gdb
cs50

#1

How can I use the debug50 tool in the plain vanilla C/C++ workspace? I tried doing the command

c9 install gdb_remote

but I get the error message

Unknown Error getting api.c9.io/packages/gdb_remote/versions/0.0.2/download?access_token=9c6IFqYUM39paU2XYZABC:403

If it’s not possible to load the debug50 tool, what is the preferred technique for attaching the debugging pull-put pane to the GDB debugger?