[BeginnerQuestion]Why the postgres_fe.h not found?

[Wen Yi]

Hello everyone,
I want to study the source of the postgres,
but now I faced some problem:
(The lsp server can't find the postgres_fe.h)
[cid:f46601f4-aa60-4ee4-8776-c1d744c9e4a9]
<https://files.slack.com/files-pri/T0FS7GCKS-F04C1UCPSQP/image.png>
[image.png]
<https://files.slack.com/files-pri/T0FS7GCKS-F04C1UCPSQP/download/image.png?origin_team=T0FS7GCKS>
6:54<https://postgresteam.slack.com/archives/C0FS3UTAP/p1669373696941209>
And the VSCODE also can't find the position of the postgres_fe.h
image.png
<https://files.slack.com/files-pri/T0FS7GCKS-F04CV4MB9ND/image.png>
[image.png]
<https://files.slack.com/files-pri/T0FS7GCKS-F04CV4MB9ND/download/image.png?origin_team=T0FS7GCKS>
6:55<https://postgresteam.slack.com/archives/C0FS3UTAP/p1669373715852069>
How can I solve this problem?
Thanks in advance!