[hunter ** INTERNAL **] Unexpected empty string

[raphael10-collab]

For the very first time I'm using Hunter.

(base) raphy@raohy:~/MyPrj$ mkdir cmake
(base) raphy@raohy:~/MyPrj$ wget https://
raw.githubusercontent.com/cpp-pm/gate/master/cmake/HunterGate.cmake -O cmake/HunterGate.cmake

I included hunter in my project CMakeLists.txt :

cmake_minimum_required(VERSION 3.15...3.31)

include("cmake/HunterGate.cmake")
HunterGate(
    URL "https://github.com/cpp-pm/hunter/archive/v0.23.216.tar.gz"
    SHA1 "a492a1879bee60c29f7af17ef56b45f0d7766241"
)

project(MyPrj)

set(ENV{GITHUB_HUNTER_USERNAME} "MyGitHubRepo")
set(ENV{GITHUB_HUNTER_TOKEN=} "MyGitHubToken")


hunter_add_package(ibp2p)
find_package(libp2p REQUIRED)

Executing the compiling phase I get this error message:

(base) raphy@raohy:~/MyPrj$ cmake -B builddir -Wno-dev

-- [hunter] Calculating Toolchain-SHA1
CMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):
  Compatibility with CMake < 3.10 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
  to tell CMake that the project requires at least <min> but has been updated
  to work with policies introduced by <max> or earlier.


-- [hunter] Calculating Config-SHA1
-- [hunter] HUNTER_ROOT: /home/raphy/.hunter
-- [hunter] [ Hunter-ID: a492a18 | Toolchain-ID: fb15dbb | Config-ID: a3b78aa ]

[hunter ** INTERNAL **] Unexpected empty string
[hunter ** INTERNAL **] [Directory:/home/raphy/MyPrj]

------------------------------ ERROR -----------------------------
    https://docs.hunter.sh/en/latest/reference/errors/error.internal.html
------------------------------------------------------------------
    
    CMake Error at /home/raphy/.hunter/_Base/Download/Hunter/0.23.216/a492a18/Unpacked/cmake/modules/hunter_error_page.cmake:12 (message):
    Call Stack (most recent call first):
      /home/raphy/.hunter/_Base/Download/Hunter/0.23.216/a492a18/Unpacked/cmake/modules/hunter_internal_error.cmake:13 (hunter_error_page)
      /home/raphy/.hunter/_Base/Download/Hunter/0.23.216/a492a18/Unpacked/cmake/modules/hunter_assert_not_empty_string.cmake:9 (hunter_internal_error)
      /home/raphy/.hunter/_Base/Download/Hunter/0.23.216/a492a18/Unpacked/cmake/modules/hunter_get_package_sha1.cmake:26 (hunter_assert_not_empty_string)
      /home/raphy/.hunter/_Base/Download/Hunter/0.23.216/a492a18/Unpacked/cmake/modules/hunter_download.cmake:82 (hunter_get_package_sha1)
      /home/raphy/.hunter/_Base/Download/Hunter/0.23.216/a492a18/Unpacked/cmake/modules/hunter_add_package.cmake:53 (hunter_download)
      CMakeLists.txt:197 (hunter_add_package)

In /home/raphy/.hunter/_Base/Download/Hunter/0.23.216/a492a18/Unpacked/cmake/modules/hunter_get_package_sha1.cmake : the indicated line is the following:

hunter_assert_not_empty_string("${x_VERSION}")

Other info:

cmake version 3.31.20241217-gabb3d39
OS: Ubuntu 24.04

What am I doing wrong and/or missing?
How to make it work?