Error https

Hola en la app de Android me sale este error:
E File: https://localhost/polyfills.53dd1ba240d556a9.js - Line 1 - Msg: Mixed Content: The page at ‘https://localhost/devanning’ was loaded over HTTPS, but requested an insecure XMLHttpRequest endpoint ‘’. This request has been blocked; the content must be served over HTTPS.
En mi local funciona perfectamente y con postman también.Alguna solucion?

check android.allowMixedContent config option

Si esto eso está ok creo que es SSL