Xcode 9 Watch OS Simulator strange warning

After testing in Watch OS simulator and try to run just iPhone Simulator, and it has failed, with a warning: invalid version number in '-mwatchos-simulator-version-min=njnjiubinj'. Check the deployment target.  Check the deployment target.

Warning looks like this:

clang error invalid number Watch Deployment target

You should check the deployment target at Watch Extension. This strange text is listed there. You should select the number version, and the error disappears.

WatchKit Extension deployment info

Watch extension deployment target change back