Here are some troubleshooting steps you can try:
Clear your browser's cache and cookies.
Access the site using a different web browser or different computer.
If the issue persists, it may be that your network system has a firewall blocking the lottie.host domain. In this case, you may need to check with your IT department to unblock the domain. To confirm, you can try accessing the site using a different network to see if it works.