If Google Maps is not loading you should check the javascript console to see what is the exact issue.

If you get an API key issue (NoApiKeys, MissingKeyMapError, InvalidKey) please try to exclude maps.googleapis.com from Script merging. If you would like to exclude a script it is always recommended to use Footer Scripts feature instead simple Exclude Script

If you get a different javascript error, first try to disable Async Execute if it is enabled. If it won’t solve the issue try to disable Merge Scripts at all.

Some scripts can’t be merged for various reasons, these scripts should be excluded from merging, using the Footer Scripts or Exclude Scripts.

Please note, some javascript errors are not related to Swift, and may won’t break the site if Merge Scripts is not enabled. You should use Merge Scripts only if there is no javascript error by default (if Swift is not active).