CORS error issue while using browserify and reactjs

Development Tools Cloud IoT
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Access to XMLHttpRequest at 'https://api2.arduino.cc/iot/v2/things/103820b4-ecf2-4f8e-a083-e9aa199aa0a5?show_deleted=true' from origin 'null' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.

i am facing this issue while using browserify and reactjs, this issue won't come up in nodejs

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