A question when debugging OpenFAST in linux

[AsIlll223]

Dear all
I try to debug openfast in linux system as the document [https://openfast.readthedocs.io/en/main/source/dev/debugging.html] ,my launch.json is written as:

{
"name": "AOC_WSt",
"type": "gdb",
"request": "launch",
"printCalls": false,
"showDevDebugOutput": false,
"valuesFormatting": "prettyPrinters",
"gdbpath": "gdb",
"target": "${workspaceRoot}/build/glue-codes/openfast/openfast",
"cwd": "${workspaceRoot}/build/reg_tests/glue-codes/openfast/AOC_WSt/",
"arguments": "${workspaceRoot}/build/reg_tests/glue-codes/openfast/AOC_WSt/AOC_WSt.fst",
}

but it occurs an error:

Could not start debugger process, does the program exist in filesystem?
Error: spawn gdb ENOENT

It seems like it cannot find gdb.exe ,but I truly has installed gdb.
Then I change the gdbpath to "/usr/bin/gdb",it also occurs an error:

Could not start debugger process, does the program exist in filesystem?
Error: spawn /usr/bin/gdb ENOENT

I am a new to debugging in linux system, I donot know how to solve the problem, could anyone give me some advice?
Thank you.

AsIlll223

[deslaughter]

Native Debug gives that error message if the cwd doesn't exist (WebFreak001/code-debug#398). Please check that ${workspaceRoot}/build/reg_tests/glue-codes/openfast/AOC_WSt exists and contains the test files. If not, run ctest -R AOC_WSt from the build directory to run the test and initialize the directory before debugging.

[AsIlll223]

Thank you! The problem has been solved.