Issue
it’s very strange , my project is all right until I open my Xcode this morning , I did not change any thing but I got an Command failed due to signal: Abort trap: 6 ( I user Xcode9 and Swift4). but with simulations, everything works fine.
I have tried turn swift optimization to [No] but don’t work.
Solution
You can try out doing one thing if you are using pods
Step 1 - Make a copy of your project
here try 2 different things
Step 2 - Pod update
if this did not work then
Step 2 - Run pod deintegrate
Step 3 - pod install
Just try if it helps
Answered By – iOS Geek
Answer Checked By – Senaida (BugsFixing Volunteer)