Cannot load module yet

[Jean Louis]

Hello,

I am using development version, and build it
--with-modules and cannot load the module for some
reason. I get this type of errors below.

Debugger entered--Lisp error: (error "Loading file 
/package/text/emacs-27.0.50/share/emacs/27.0.50/lisp/vc/vc-git.elc failed to 
provide feature ‘pq’")
  require(pq)
  eval((require 'pq) nil)
  elisp--eval-last-sexp(nil)
  eval-last-sexp(nil)
  funcall-interactively(eval-last-sexp nil)
  call-interactively(eval-last-sexp nil nil)
  command-execute(eval-last-sexp)

I have tried loading emacs-libpq from:

https://github.com/anse1/emacs-libpq/issues/8

as the pg.el stopped working for PostgreSQL
version 10.1, where protocol 1.0 is not any more
supported.

If somebody knows why this error appears and how I
may remedy it, let me know.

Jean