# Welclient/web preview is able to connect to server but live test/apk (installed on mobile) gives "network request failed"

**URL:** https://community.thunkable.com/t/welclient-web-preview-is-able-to-connect-to-server-but-live-test-apk-installed-on-mobile-gives-network-request-failed/2756774
**Category:** Web API's
**Created:** [December 21, 2023, 4:42am UTC](https://community.thunkable.com/t/welclient-web-preview-is-able-to-connect-to-server-but-live-test-apk-installed-on-mobile-gives-network-request-failed/2756774 "2023-12-21T04:42:41Z")
**Posts on this page:** 1
**Showing post:** 6

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### Author: ![matthewmcguire4321lz](https://avatars.discourse-cdn.com/v4/letter/m/4bbf92/32.png) [@matthewmcguire4321lz](https://community.thunkable.com/u/matthewmcguire4321lz)
#### Post date: [December 27, 2023, 10:49am UTC](https://community.thunkable.com/t/welclient-web-preview-is-able-to-connect-to-server-but-live-test-apk-installed-on-mobile-gives-network-request-failed/2756774/6 "2023-12-27T10:49:56Z")

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This worked for me:

[Web API Error on Android: Network request failed - Questions about Thunkable - Community](https://community.thunkable.com/t/web-api-error-on-android-network-request-failed/1331289/10)

Add this to the query parameter:

Content-Type:text/plain

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