Obfuscation not working

[unicorn700]

I am trying to obfuscate an OSX application after making some changes to the obfuscate_project script, the symbols.json file is getting generated, but the final app is not getting obfuscated. May be following warning messages are the source of error, kindly check :

Warning: Failed to load: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/Foundation.framework/Versions/C/Foundation

Warning: Couldn't load MachOFile with ID: /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation, adjustedID: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/Foundation.framework/Versions/C/Foundation

Warning: Failed to load: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/lib/libobjc.A.dylib
Warning: Couldn't load MachOFile with ID: /usr/lib/libobjc.A.dylib, adjustedID: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/lib/libobjc.A.dylib

Warning: Failed to load: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/lib/libSystem.B.dylib
Warning: Couldn't load MachOFile with ID: /usr/lib/libSystem.B.dylib, adjustedID: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/lib/libSystem.B.dylib

Warning: Failed to load: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
Warning: Couldn't load MachOFile with ID: /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit, adjustedID: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit

Warning: Failed to load: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation

Warning: Couldn't load MachOFile with ID: /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation, adjustedID: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation

Kindly, suggest me some workaround.