Business owners have said they are "heartbroken" after dozens of retail units burnt to the ground during a fire in Glasgow. More than 250 firefighters were called in to tackle the blaze that started in a vape shop on Sunday, before it engulfed the entire building on Union Corner next to Central Station. The B-listed Victorian property was home to many independent businesses that have been left with nowhere to work from after the building collapsed. Studios and expensive equipment were destroyed in the fire, and people have donated more than £20,000 to fundraisers to help deal with the financial impact. Rail operators have warned there will be days of disruption to travel. First Minister John Swinney attended the scene on Monday and said the Scottish government would contribute financially to help the council. But there is no clear recovery plan for local businesses yet. Courtney MacKinnon has run a hairdressing business called Cece's Salon in the building for the past four years.…