What happens if a wormhole collapses?

Could you please explain what the consequences would be if a wormhole, the hypothetical bridge connecting two distinct regions of spacetime, were to suddenly collapse? Would it create a catastrophic event with widespread destruction, or would it simply disappear with minimal impact? Also, would the collapse be instantaneous or would there be any observable precursors? Furthermore, would such an event have any impact on the surrounding spacetime or nearby matter? Finally, is there any theoretical framework or scientific evidence that suggests what might happen in such a scenario?