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1
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Many (most? all?) of your demos on stackBlitz, whether React or not, use MapAjax to load shapeData from URLs like this: 

https://ej2.syncfusion.com/react/demos/src/maps/map-data/usa.json

However, your server is rejecting those requests because of CORS.

Access to fetch at 'https://t.staticblitz.com/v9/@syncfusion/[email protected]' from origin 'https://stackblitz.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.


This is making it nearly impossible to troubleshoot and test features.

Here is an example from your "Zoom to fit all markers" demo.