This is the 15375th most frequent Korean word.
벌어져서는
"벌어져서는" means "if/when (something) happens or occurs."
벌어져서는 is used here to imply that the occurrence of the problem is something to be avoided.
그 문제는 벌어져서는 안 되는 일이었어요.
That issue was something that shouldn’t have happened.
벌어져서는 is used to discuss the hypothetical scenario of an accident occurring and its consequences.
사고가 벌어져서는 사람들이 불편하게 됩니다.
If an accident happens, it makes people inconvenienced.
벌어져서는 applies to the potential occurrence of problems requiring actionable steps to resolve them.