Weird Swift 3 Error Message

I just converted my Xcode Project to Swift 3 and now there is this one error that always pops up and it says:

ProcessProductPackaging "" /Users/brycerega/Library/Developer/Xcode/DerivedData/Muffin_Defense-bljyznyfhoavpihgglgrfbrnxjti/Build/Intermediates/SwiftMigration/Muffin\ Defense/Intermediates/Muffin\ Defense.build/Debug-iphonesimulator/Muffin\ DefenseUITests.build/Muffin\ DefenseUITests.xctest.xcent cd "/Users/brycerega/Desktop/Xcode/Muffin Defense" export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"

Entitlements:

{ "application-identifier" = "MF68MWM332.com.Binc.Muffin-DefenseUITests"; "get-task-allow" = 1; }

builtin-productPackagingUtility -entitlements -format xml -o /Users/brycerega/Library/Developer/Xcode/DerivedData/Muffin_Defense-bljyznyfhoavpihgglgrfbrnxjti/Build/Intermediates/SwiftMigration/Muffin\ Defense/Intermediates/Muffin\ Defense.build/Debug-iphonesimulator/Muffin\ DefenseUITests.build/Muffin\ DefenseUITests.xctest.xcent

warning: Falling back to contents of entitlements file " " because it was modified during the build process. Modifying the entitlements file during the build is unsupported.error: The file “ ” couldn’t be opened because there is no such file.

I have no Idea what any of this means, but I still went down the file paths that it said and everything seemed normal. I don't know what to do and this error is getting annoying so can someone please help.

Also the error doesn't affect the build as it still proceeds to run on the iPhone 7 simulator.