GDB debug - not listing the source code

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Hi guys,

I do run the binaries of my ros node using: $ gdb node from within the binary folder of my package and I do set accordingly breakpoints but when the execution reaches the breakpoint and I want to list the code via List function, it shows me this:

(gdb) l

1 <built-in>: No such file or directory.

Has anyone faced this problem before? Could you please give me a hint what I may be doing wrong?

Thank you!