Serbia made it official:
"BELGRADE, Jan 20 (Reuters) - Serbia revoked Rio Tinto's (RIO.L) lithium exploration licences on Thursday, bowing to protesters who opposed the development of the project by the Anglo-Australian mining giant on environmental grounds."
https://www.reuters.com/business/retail-consumer/serbian-government-revokes-rio-tintos-licences-lithium-project-2022-01-20/