後端已經容許了跨域，前端依然報跨域錯誤，研究一下 Access-Control-Allow-Credentials...

即便後端已經容許了跨域，可是前端依然報一個跨域錯誤。javascript Access to XMLHttpRequest at 'http://localhost/api/admin/authorizations' from origin 'http://localhost:9528' has been blocked by CORS policy: Response to preflight

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