What is the origin of 甩锅 ("to pass the buck")? I've been hearing 甩锅 (shuǎiguō) used to describe how US president Trump often blames others (currently the WHO).  It means "to shift the blame" or "to pass the buck".  I'm interested in its etymology.

Baidu Baike and Baidu Zhidao both say it comes from a 局 (?) in the game League of Legends called 甩锅局.  I don't play this game so I don't really understand.

Question: What is the origin of 甩锅?
甩锅 means throw the pan literally. Before that we have a slang 背锅 / 背黑锅, means take the blame for others / be made a scapegoat; 锅 / 黑锅 connotes blame. Then 甩锅 is used for the meaning of throw one's blame to others, i.e. 推卸责任 (buck-passing).

Also see 背锅的由来.