Hi
I see @timezoom that you are on windows, @iamrommel what about you? Is this first time you used build:ios command or it stopped working at some point? Did you followed all windows specific instruction in the documentation?
https://docs.expo.io/versions/latest/distribution/building-standalone-apps/
Windows users must have WSL enabled. We recommend picking Ubuntu from the Windows Store. Be sure to Launch Ubuntu at least once. After that, use an Admin powershell to run: Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Windows-Subsystem-Linux
Can you check if in your global node_modules there is package @expo/traveling-fastlane-linux?