I watched this How to download applications on iPhone using Xcode 7
Download the codecs, install it and the reason, run the pod install command
Prior to that, it worked perfectly. But when I start the GBA4iOS.xcworkspace project GBA4iOS.xcworkspace is an error, says
'Dropbox-iOS-SDK/DropboxSDK.h' file not found

This is strange, so I deleted the Pods directory and installed it again. I received a warning when this was done.
[!] CrashlyticsFramework has been deprecated in favor of Crashlytics

But I do not think that this is the reason causing this error.
Actually, I can find this head file in Pods
At the bottom of this screenshot is DropboxSDK.h

So what is going on? How to fix it?
ios dropbox cocoapods
MMMMMCCLXXVII
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