make an issue (out) of (something)
To exaggerate or treat a minor issue in a way that makes it seem like a major one. You got one B and you're acting like you're failing the class—don't make an issue out of nothing. Let's not make an issue of this; it's just a minor setback.
make an issue of
treat too seriously or as a problem.make an ˈissue of/out of something
behave as if something is more serious or important than it really is: Look, it’s not important who did it. Let’s not make an issue out of it.