IOS Xcode 8 Dsymulti Warning

Question

Hi I just update my project to xcode 8 but dont know why my xcode console is flood with Dsymulti warning message.

while processing /Volumes/Data/OneDrive/Singpost/Esam/Vic/Version1/SAM/eSAM/SAMKiosk/Classes/Libs/NETS/libNETS.a(NETS.o):
warning: /Users/Chetas/Library/Developer/Xcode/DerivedData/ModuleCache/9CPWN0R8YQPE/Foundation-A3SOD99KJ0S9.pcm: No such file or directory
note: Linking a static library that was built with -gmodules, but the module cache was not found.  Redistributable static libraries should never be built with module debugging enabled.  The debug experience will be degraded due to incomplete debug information.
while processing /Volumes/Data/OneDrive/Singpost/Esam/Vic/Version1/SAM/eSAM/SAMKiosk/Classes/Libs/NETS/libNETS.a(NETS.o):
warning: /Users/Chetas/Library/Developer/Xcode/DerivedData/ModuleCache/9CPWN0R8YQPE/ObjectiveC-2CD0WTQVXITO7.pcm: No such file or directory
while processing /Volumes/Data/OneDrive/Singpost/Esam/Vic/Version1/SAM/eSAM/SAMKiosk/Classes/Libs/NETS/libNETS.a(NETS.o):
warning: /Users/Chetas/Library/Developer/Xcode/DerivedData/ModuleCache/9CPWN0R8YQPE/CoreFoundation-10I2D2XL7L7X9.pcm: No such file or directory

My project still can build successfully. Any one know how can we deal with these warning? Thanks!