App stopped working in Safari and on iOS for no reason

I did not change a single line of code, but about two weeks ago my ionic app stopped working. “ionic serve” in Safari won’t work properly, however, in chrome it works just fine. I am getting an opened sidemenu and a black screen everywhere else. The same thing happens when I emulate my app as well as when I run an app on my iPhone.

Android version works as it supposed to be.

How can I solve this problem? I have never encountered it.