AMPDevicesAgent gets SIGKILL Code Signature Invalid as soon as I launch it. What's is this?

When I plug in my iPhone, AMPDevicesAgent gets EXC_CRASH (SIGKILL (Code Signature Invalid)). It's not asking me for a password with Keychain. I'm reading this may have to do with an invalid digital signature. What's the problem and resolution? I was reading that the following may fix, but don't want to force any digital sig if I have a security problem: codesign --force --deep --sign - /Applications/App.app /System/Library/LaunchAgents/com.apple.AMPDevicesAgent.plist /System/Library/PrivateFrameworks/AMPDevices.framework/Versions/A/Support/AMPDevicesAgent /Users/$USER/Library/HTTPStorages/com.apple.AMPDevicesAgent