fetch klaviyo API A cross-origin issue has occurred

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whereisjadAnswer

Expert Problem Solver IV

@bodyparkATOM

Have you seen these Community threads on the topic? I would recommend trying the solutions here as a first step:

https://community.klaviyo.com/developer%2Dgroup%2D64/url%2Dhas%2Dbeen%2Dblocked%2Dby%2Dcors%2Dpolicy%2D7365

https://community.klaviyo.com/developer%2Dgroup%2D64/cors%2Dpolicy%2Dno%2Daccess%2Dcontrol%2Dallow%2Dorigin%2D1457

— Jad A | Klaviyo + Shopify + API Integrations Specialist • 7+ Years' Experience Helping with new setups, seamless integrations, and API connections—happy to connect. http://ja-technical-consulting.xyz/