unable to do anything other than output.innerHTML=''

[denigada]

My auto updater works perfectly. It added such a convenient feature to my desktop app. I appreciate the efforts for this repo. However, I am having problems changing the part where I show users that the app is swapping to the new version. In the if statement, the codes that I indicated in the picture dont work. I am a beginner to javascript and I could not figure out why this is happening.

I am not able to see the errors in the console because I cannot use the console I am trying the updater in a actual dist version. I would appreciate if anyone suggests a solution for this issue.