[HOOK - conan-center.py] pre_export(): ERROR: [CONANDATA.YML FORMAT (KB-H030)] First level entries ['git_hashes', 'main_patches', 'snappy_patches'] not allowed. Use only first level entries ['sources', 'patches'] in conandata.yml (https://github.com/conan-io/conan-center-index/wiki/Error-Knowledge-Base#KB-H030) 
ERROR: [HOOK - conan-center.py] pre_export(): Some checks failed running the hook, check the output