install manually from this link https://developer.apple.com/download/all/?q=command%20line%20tools solved my problem

i couldn't find the original post - thanks that person- manually install from that link solved my problem https://developer.apple.com/download/all/?q=command%20line%20tools

nothing worked for me, until go to VSCode(IDE APP), and ios/App/App.xcodeproj/project.pbxproj that file , and searched EXCLUDED_ARCHS = arm64; and delete that line, i did same thing from xcode, like go to target>build settings, exclude arc thing and deleted arm64 from there, didnt worked before, but deleting from VSCode worked , weird

My problem solved with delete arm64 from target>build settings>Excluded Architectures. Actually i deleted from there before, but actually worked when i go to my VSCode and go to ios/App/App.xcodeproj/project.pbxproj file and searched EXCLUDED_ARCHS = arm64; and delete from there, and worked, i dont know why my update at xcode did not worked but VSCode worked xcode 12.0.1, iOS 14 pack updated, and all capacitor stuff updated for 2.0.4 (latest one)

Maybe someone have similar issue, i just wanted to share. We have @ionic/react capacitor -app and normally i did not get any error, at testFlight we get black screen,  check config.capacitor.json and see if u have localhost there, delete URLs under server .. we(I) forgot our URL localhost still there, to be honest i did not know that could be problem , i spent time(days) to check storyBoard suggestions. xcode 11.6

Maybe someone have similar issue, i just wanted to share. We have @ionic/react capacitor -app and normally i did not get any error, at testFlight we get black screen,  check config.capacitor.json and see if u have localhost there, delete URLs under server .. we(I) forgot our URL localhost still there, to be honest i did not know that could be problem , i spent time(days) to check storyBoard suggestions.

Maybe someone have similar issue, i just wanted to share. We have @ionic/react capacitor -app and normally i did not get any error, at testFlight we get black screen, check config.capacitor.json, delete URLs under server .. we forgot our URL localhost still there, to be honest i did not know that could be problem , i spent time(days) to check storyBoard suggestions.

We dont have "UISeachDisplayController" in our ionic/react capacitor project. Any other suggestions? xcode 11.6