After a syntax error in the playground file, all my playgrounds display
"Detected invalid state (5) after execution."
I am using Xcode 8.3 (8E162) and Sierra 10.12.4 I restarted Xcode several times, I also rebooted the computer. I deleted the received data with
rm -rf ~/Library/Developer/Xcode/DerivedData
What else should I do?
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