This is probably just part of the storyline. Spoiler warning.
The tavern gets burned down partway through chapter 2. A new tavern can be built, but how you do that depends on whether you decided to stay in town or leave with Roland. If you don’t leave town with Roland, it takes a little while before you can see him again.
Because leaving or staying in town is such a big decision, the game should warn you about it, so even if you’re just mashing through the story, a window should pop up confirming you’re sure about what want to do, so you should have seen that, and if you’re already on to chapter 3, you can probably access the bandit camp, and that’s where Roland should start appearing now if you did indeed stay in town. To get the tavern back, you’ll have to help Roland fund a new one, and in return you’ll be a co-owner and get part of his profits. It costs 1000G.
If you leave with Roland, the events progress differently and the tavern will be rebuilt without you having to do anything, but you won’t get an ownership stake and you are forced to stay out of the city for a while.