Android

android/main/src/AndroidManifest.xml

<application
    ...
    android:usesCleartextTraffic="true"
    >
    ...
</application>

iOS

ios/projectName/info.plist

...
<key>NSAppTransportSecurity</key>
<dict>
	...
    <key>NSAllowsArbitraryLoads</key>  <!-- 추가 -->
    <true/>  <!-- 추가 -->
    ...
</dict>```