[HOOK - conan-center.py] pre_export(): ERROR: [RECIPE METADATA (KB-H003)] Conanfile doesn't have 'homepage' attribute.  (https://github.com/conan-io/conan-center-index/wiki/Error-Knowledge-Base#KB-H003) 
[HOOK - conan-center.py] pre_export(): ERROR: [CONAN CENTER INDEX URL (KB-H027)] The attribute 'url' should point to: https://github.com/conan-io/conan-center-index (https://github.com/conan-io/conan-center-index/wiki/Error-Knowledge-Base#KB-H027) 
ERROR: [HOOK - conan-center.py] pre_export(): Some checks failed running the hook, check the output