ionic-cli: `ionic cordova resources` fails

Bug Report

Ionic version: 4.9.0

Current behavior: When run ionic cordova resources execution fails with:

HTTP Error 520: POST https://res.ionic.io/api/v1/upload

<!DOCTYPE html>
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<head>


<title>res.ionic.io | 520: Web server is returning an unknown error</title>
<meta charset="UTF-8" />
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1" />
<meta name="robots" content="noindex, nofollow" />
<meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1" />
<link rel="stylesheet" id="cf_styles-css" href="/cdn-cgi/styles/cf.errors.css" type="text/css" media="screen,projection" />
<!--[if lt IE 9]><link rel="stylesheet" id='cf_styles-ie-css' href="/cdn-cgi/styles/cf.errors.ie.css" type="text/css" media="screen,projection" /><!
<style type="text/cs ...

      throw Error("end() has already been called, so it's too late to start piping");
      ^

Error: end() has already been called, so it's too late to start piping
    at Response.response.pipe (C:\Users\drapa\AppData\Roaming\npm\node_modules\ionic\node_modules\superagent\lib\node\index.js:859:13)
    at Request.req.type.send.on.res (C:\Users\drapa\AppData\Roaming\npm\node_modules\ionic\lib\integrations\cordova\resources.js:166:25)
    at Request.emit (events.js:182:13)
    at Request._emitResponse (C:\Users\drapa\AppData\Roaming\npm\node_modules\ionic\node_modules\superagent\lib\node\index.js:862:8)
    at ClientRequest.req.once.res (C:\Users\drapa\AppData\Roaming\npm\node_modules\ionic\node_modules\superagent\lib\node\index.js:412:10)
    at Object.onceWrapper (events.js:273:13)
    at ClientRequest.emit (events.js:187:15)
    at HTTPParser.parserOnIncomingClient [as onIncoming] (_http_client.js:556:21)
    at HTTPParser.parserOnHeadersComplete (_http_common.js:109:17)
    at TLSSocket.socketOnData (_http_client.js:442:20)

Expected behavior: Generate resources

Steps to reproduce: Windows/MacOS run ionic cordova resources

Other information: https://stackoverflow.com/questions/54155176/ionic-cordova-resources-splash-and-icon-error

Ionic info:

Ionic:

   ionic (Ionic CLI)             : 4.9.0 (C:\Users\drapa\AppData\Roaming\npm\node_modules\ionic)
   Ionic Framework               : @ionic/angular 4.0.0
   @angular-devkit/build-angular : 0.12.3
   @angular-devkit/schematics    : 7.2.3
   @angular/cli                  : 7.1.4
   @ionic/angular-toolkit        : 1.2.3

Cordova:

   cordova (Cordova CLI) : 8.1.2 (cordova-lib@8.1.1)
   Cordova Platforms     : android 7.1.4
   Cordova Plugins       : cordova-plugin-ionic-keyboard 2.1.3, cordova-plugin-ionic-webview 2.3.2, (and 10 other plugins)

System:

   Android SDK Tools : 26.1.1 (C:\Android\sdk)
   NodeJS            : v10.14.2 (C:\Program Files\nodejs\node.exe)
   npm               : 6.4.1
   OS                : Windows 7

About this issue

Original URL
State: closed
Created 5 years ago
Comments: 21 (6 by maintainers)

Most upvoted comments

I had the same problem. Make sure that you have icon (1024 x 1024) and splash (2732 x 2732) in resources folder.

etpl7 on Feb 19, 2019

I see this too when generating for iOS. Possibly because my source icon.png is smaller than 1024x1024?

ionic:lib:integrations:cordova:resources response 400 received for icon-1024.png: (id: a609b411d96b5ae5ae9b5d57ace98104) +37ms /Users/ndrake/.nvm/versions/node/v10.15.0/lib/node_modules/ionic/node_modules/superagent/lib/node/index.js:859

ndrake on Jan 30, 2019

Same error with me too

> ionic cordova resources android --force
√ Collecting resource configuration and source images - done!
√ Filtering out image resources that do not need regeneration - done!
(node:3960) ExperimentalWarning: The http2 module is an experimental API.
√ Uploading source images to prepare for transformations: 2 / 2 complete - done!
/ Generating platform resources
C:\Users\Slash\AppData\Roaming\npm\node_modules\ionic\node_modules\superagent\lib\node\index.js:859
      throw Error("end() has already been called, so it's too late to start piping");
      ^

Error: end() has already been called, so it's too late to start piping
    at Response.response.pipe (C:\Users\Slash\AppData\Roaming\npm\node_modules\ionic\node_modules\superagent\lib\node\index.js:859:13)
    at Request.req.type.send.on.res (C:\Users\Slash\AppData\Roaming\npm\node_modules\ionic\lib\integrations\cordova\resources.js:166:25)
    at Request.emit (events.js:160:13)
    at Request._emitResponse (C:\Users\Slash\AppData\Roaming\npm\node_modules\ionic\node_modules\superagent\lib\node\index.js:862:8)
    at ClientRequest.req.once.res (C:\Users\Slash\AppData\Roaming\npm\node_modules\ionic\node_modules\superagent\lib\node\index.js:412:10)
    at Object.onceWrapper (events.js:255:19)
    at ClientRequest.emit (events.js:165:20)
    at HTTPParser.parserOnIncomingClient [as onIncoming] (_http_client.js:548:21)
    at HTTPParser.parserOnHeadersComplete (_http_common.js:115:23)
    at TLSSocket.socketOnData (_http_client.js:439:20)

Moussa-M on Jan 30, 2019

@arcreative We’ve already poured so much development time into the resources service. Generating Cordova resources is not a core strength of Ionic. It is better for us to focus on the framework and supporting tools, not an image resizing service. Additionally, since this legacy resources service performs the CPU-intensive image scaling (and network transfer) on our servers and since the service is completely free, we lose quite a bit of money to it each year.

There are many offline/local options available for resizing Cordova resources. Ionic even has one now: cordova-res. I started the project in an attempt to deprecate the legacy resources service as soon as possible. You can try it today:

npm i -g cordova-res
ionic cordova resources --cordova-res

I apologize to those who’ve run into obscure errors with this command. We’ve tried to mitigate the issues with good documentation, but we know it’s not enough. The sooner we get rid of the legacy service and make cordova-res the default, the better.

imhoffd on Mar 14, 2019

I’ve found the issue I was missing icon.png in my resources folder

https://ionicframework.com/docs/cli/commands/cordova-resources/

Moussa-M on Jan 30, 2019

This is actually a funny one. I had the same yesterday. There is a workaround for that. Instead of running one command which will generate everything:

ionic cordova resources

try this:

ionic cordova resources ios
ionic cordova resources android

rafalschmidt97 on Jan 30, 2019