Debug OOT module error

Hi,guys

I use vscode to open an out-of-tree module created with gr_modtool (I have not yet started to write the code, only the initial code provided) Why does it prompt'djscc/api.h' file not found clang(pp_file_not_found), the strange thing is that I open one The square_ff module (which has been compiled and installed and can be used) built with the tutorial once did not prompt the corresponding error.

I have checked a lot of information on the Internet and still haven't solved this problem. Has anyone encountered the same problem?

I think it's the plug-in problem of vscode, but I don't know why the created OOT module does not report an error.

Sincerely