QuickCheck: Was a restaurant worker in Cheras slashed for reprimanding a customer?

Screengrab from video courtesy of Majoriti.my

A RECENT viral video on social media showed a dramatic confrontation between two weapon-wielding men and a restaurant worker in broad daylight. In the video, the angry men with machetes are seen striding up to a lady in black and pointing the dangerous objects are her before chasing and assaulting the restaurant worker repeatedly. Customers are seen hurriedly escaping the premises, chairs are flung about, and the lady in black attempts to defend the worker and even stays calm when one man raises his machete aggressively as if to strike her down.

Did this violent scene actually happen in Cheras because of a verbal exchange prior to the altercation?