"kind: local" sources doesn't have 'url', neither 'ref:'
Docs here: https://buildstream.gitlab.io/buildstream/sources/local.html#module-sources.local
Update: this the generated file with the error: https://gitlab.com/freedesktop-sdk/json2bst/-/jobs/42639658/artifacts/file/bst-definitions/emoji-one-font.bst
Edited by Javier Jardón