The issue reported is at Apple’s end.
Hence, Apple is recommending to update macOS to 10.15.x version in order to resolve this issue.
Please update your macOS to Catalina. If you still face this issue in macOS 10.15 do add your comment in this thread.
Adobe InDesign team
An error occurred while saving the commentLuiz Daniel Silveira commented
MacBook Pro + 4K monitor. Everything was okay in 30Hz, and in fact, changing to 60Hz is the problem.
My question is: does 60Hz really make any difference in Indesign? I've made some tests and seems to be the same thing, but maybe I'm too dumb to see the difference.