[HOOK - conan-center.py] pre_source(): ERROR: [IMMUTABLE SOURCES (KB-H010)] Create a file 'conandata.yml' file with the sources to be downloaded. (https://github.com/conan-io/conan-center-index/wiki/Error-Knowledge-Base#KB-H010) 
[HOOK - conan-center.py] pre_source(): ERROR: [IMMUTABLE SOURCES (KB-H010)] Use 'tools.get(**self.conan_data["sources"]["XXXXX"])' in the source() method to get the sources. (https://github.com/conan-io/conan-center-index/wiki/Error-Knowledge-Base#KB-H010) 
ERROR: [HOOK - conan-center.py] pre_source(): Some checks failed running the hook, check the output