A popular cocktail bar has announced it could stop opening on Fridays because of 'aggressive and abusive' customers refusing to follow coronavirus rules.Bosses at the Northern Crafthouse, on Bury New Road, Whitefield, said the venue will be shut this Friday (September 4) - and could be closed every Friday if the problems continue.In a statement released on the venue's Facebook page, a spokesman said an incident last week forced the bar to close early.According to the post, Fridays are the most