Memo on the solution for iOS app build error “While reading … pngcrush caught libpng error”.

CopyPNGFile Error Message

Command  emitted errors but did not return a nonzero exit code to indicate failure

Solution for CopyPNGFile Error

In Project Target -> Build Phases -> Copy Bundle Resources, if the image file name causing the error is registered as a duplicate, delete one of them.

That’s all from the Gemba.

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Reference Information

・ビルドエラー「While reading … pngcrush caught libpng error」への対処方法 - 甘いものが好きです

・iphone - Not a PNG filCommand copypng emitted errors but did not return a nonzero exit code to indicate failure - Stack Overflow

・[iOS] ビルドエラー(CopyPNGFile Error…)の対処法: ものづくりログ