If you are using WP Rocket for WordPress, you may need to make some changes to your WP Rocket settings.
Check if you have "Minify JavaScript Files" enabled. You can check this from your WordPress Dashboard > Settings > WP Rocket > File Optimization > JavaScript Files.
If that setting is enabled, add widgets.boast.io to the Excluded Javascript Files list.
Save your changes and clear your website cache (in the black admin bar at the top of your website, select WP Rocket > Clear Cache).