gdb won't attach to process

I'm having trouble running a remote gdb becuase the attached process is already being traced.

I run:

gdbserver localhost:12345 --attach 142

But I'm told process 142 is already traced by process 127 (pid 127 belongs to bash, where I run).

The solutions online advised doing the following:

• echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope
• edit /etc/sysctl.d/10-ptrace.conf and set kernel.yama.ptrace_scope = 0

I've run both successfully, but I still get the error message of process is already traced by another process.

Anything?