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Hello @kontaktdigital ,
The error message indicates that a 404 error occurred when trying to access a specific JavaScript file (chat-widget.esm.js) from the siteground-optimizer-assets directory on the website. As you may know, a 404 error means that the requested resource is either missing or incorrectly linked.
The best course of action is to contact us through your SiteGround Client Area so our team can further investigate the cause of the issue.
You can link the support topic here as a reference.
Best Regards,
Gergana Petrova