Mautic problem with Access-Control-Allow-Origin - Product Support

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Is bug? Have solution?

XMLHttpRequest cannot load http://materiais.ciadecomedia.com.br/mtc/event . Response to preflight request doesn’t pass access control check: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘ http://blog.ciadecomedia.art.br ’ is therefore not allowed access.

POST http://materiais.ciadecomedia.com.br/form/submit?formId=1 500 (Internal Server Error)

app.js?v0fba60da:197 Uncaught DOMException: Blocked a frame with origin “ http://materiais.ciadecomedia.com.br ” from accessing a cross-origin frame.

at HTMLDocument. ( http://materiais.ciadecomedia.com.br/media/js/app.js?v0fba60da:197:36 )

at fire ( http://materiais.ciadecomedia.com.br/media/js/libraries.js?v0fba60da:328:299 )

at Object.fireWith [as resolveWith] ( http://materiais.ciadecomedia.com.br/media/js/libraries.js?v0fba60da:333:198 )

at Function.ready ( http://materiais.ciadecomedia.com.br/media/js/libraries.js?v0fba60da:340:11 )

at HTMLDocument.completed ( http://materiais.ciadecomedia.com.br/media/js/libraries.js?v0fba60da:340:291 )

(anonymous) @ app.js?v0fba60da:197

fire @ libraries.js?v0fba60da:328

fireWith @ libraries.js?v0fba60da:333

ready @ libraries.js?v0fba60da:340

completed @ libraries.js?v0fba60da:340

When I configure Mautic in “another” domain, I have this message.

Is bug? Have solution?

XMLHttpRequest cannot load http://materiais.ciadecomedia.com.br/mtc/event . Response to preflight request doesn’t pass access control check: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘ http://blog.ciadecomedia.art.br ’ is therefore not allowed access.

Unless Mautic and the site the form is being embedded on share the same domain name, check that X-Frame-Options is not set to SAMEORIGIN on the server running Mautic.

In Nginx, look for this line: add_header X-Frame-Options “SAMEORIGIN”;
In Apache, look for this line: Header always append X-Frame-Options SAMEORIGIN

Comment the line out, reload the web server, and try submitting the form again. No need to clear caches on either Mautic or the website.