You can try the following steps:

• Open terminal.
• Go to your project directory.
• Run the following command:

xcrun simctl --set previews delete all

This should clear your preview cache data and it should load fine.

You can try the following steps:

• Open terminal.
• Go to your project directory.
• Run the following command:

xcrun simctl --set previews delete all

This should clear your preview cache data and it should load fine.

Edit from OP:

Run sudo xcode-select -s /Applications/Xcode.app first.