iOS打开demo时提示错误“Code signing is required for product type 'Application' in SDK 'iOS 10.X'”

如图提示以下错误：

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在Targets下勾选“Automatically manage signing”选项，然后就会报以下错误：

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在project下同样勾选“Automatically manage Signing”

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Now go under "build settings" tab of each of those targets and set "iOS Developer" under code signing identity. Do the same steps for your "PROJECT".

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Now do Xcode → Product → Clean. Close your project in Xcode and reopen it again.

After this go to the general tab of each of your targets and check "Automatically manage signing" and under team drop down select your developer account。

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