Unable to add new project. GitHub error

I need to build a new project hosted on GitHub, but when I try to add it, nothing happens. Checking developer tools, here is the error from your servers:

HTTP 422 Unprocessable Entity


{"message":"{\"message\":\"Validation Failed\",\"errors\":[{\"resource\":\"Hook\",\"code\":\"custom\",\"message\":\"download, fork_apply, follow, and gist are not valid event names\"}],\"documentation_url\":\"https://developer.github.com/v3/repos/hooks/#create-a-hook\"}"}