dyld: Library not loaded: @rpath/libswiftCore.dylib
I am getting this issue in my existing project and i tried to create new project then i run in device getting same issue
dyld: Library not loaded: @rpath/libswiftCore.dylib
Referenced from: /var/mobile/Containers/Bundle/Application/D14EA274-0C2B-457B-8E8F-494197978F34/Pro.app/Pro
Reason: no suitable image found. Did find:
/private/var/mobile/Containers/Bundle/Application/D14EA274-0C2B-457B-8E8F-494197978F34/Pro.app/Frameworks/libswiftCore.dylib: mmap() errno=1 validating first page of '/private/var/mobile/Containers/Bundle/Application/D14EA274-0C2B-457B-8E8F-494197978F34/Pro.app/Frameworks/libswiftCore.dylib'
some of the answer i tired but still getting same issue 
Solution
I found this issue some months back. It was cause by Apple's default certificate being expired.
This resolved my issue.
- Go to keychain access
- Select "System" in "Kechains" and "All Items" in "Category"
- There will be a certificate with name "Apple Worldwide Developer Relations Certification Authority". Check if it's valid
- In my case, it had been expired. Delete that certificate if it's expired or is showing as signed by unauthorized identifier
- Goto https://www.apple.com/certificateauthority/ and download "Worldwide Developer Relations - G2 Certificate" under "Apple Intermediate Certificates"
- Install the certicate
- Clean, Build and run.
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