Fix CORS error when downloading PDF #62652

LorenzoBloedow · 2025-05-23T15:10:25Z

Explanation of Change

We now download the PDF by opening it as an external URL on the first attempt instead of trying to open in the current URL, getting an error, and then trying with an external.

Fixed Issues

$ #61937
PROPOSAL: #61937 (comment)

Tests

For example:

Overwrite this function so we can test on a dev environment:

App/src/libs/Environment/Environment.ts

Lines 54 to 56 in d17b700

    
           function getOldDotURLFromEnvironment(environment: Environment): string { 
        
               return OLDDOT_ENVIRONMENT_URLS[environment]; 
        
           }

function getOldDotURLFromEnvironment(environment: Environment): string {
    return OLDDOT_ENVIRONMENT_URLS[CONST.ENVIRONMENT.STAGING];
    return OLDDOT_ENVIRONMENT_URLS[environment];
}

Click on "Reports".
Click on a report with an expense.
Click on the expense header.
Click on "Download as PDF".
Click on "Download".
Verify that no CORS errors appear in the JS console.

Offline tests

N/A (We need an internet connection to use this feature).

QA Steps

Click on "Reports".
Click on a report with an expense.
Click on the expense header.
Click on "Download as PDF".
Click on "Download".
Verify that no CORS errors appear in the JS console.

PR Author Checklist

Screenshots/Videos

Android: Native

Screen.Recording.2025-05-23.at.12.00.52.PM.mov

Android: mWeb Chrome

Screen.Recording.2025-05-23.at.11.47.56.AM.mov

iOS: Native

Screen.Recording.2025-05-23.at.11.54.23.AM.mov

iOS: mWeb Safari

Screen.Recording.2025-05-23.at.11.52.13.AM.mov

MacOS: Chrome / Safari

Screen.Recording.2025-05-23.at.11.44.13.AM.mov

MacOS: Desktop

Screen.Recording.2025-05-23.at.12.05.30.PM.mov

PS: There are a couple of unrelated console errors in the videos.

melvin-bot · 2025-05-23T15:10:30Z

@hoangzinh Please copy/paste the Reviewer Checklist from here into a new comment on this PR and complete it. If you have the K2 extension, you can simply click: [this button]

hoangzinh · 2025-05-23T15:24:55Z

@LorenzoBloedow can you fix Lint check?

hoangzinh · 2025-05-23T15:44:05Z

Reviewer Checklist

I have verified the author checklist is complete (all boxes are checked off).
I verified the correct issue is linked in the ### Fixed Issues section above
I verified testing steps are clear and they cover the changes made in this PR
- I verified the steps for local testing are in the Tests section
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- Android: HybridApp
- Android: mWeb Chrome
- iOS: HybridApp
- iOS: mWeb Safari
- MacOS: Chrome / Safari
- MacOS: Desktop
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If the main branch was merged into this PR after a review, I tested again and verified the outcome was still expected according to the Test steps.
I have checked off every checkbox in the PR reviewer checklist, including those that don't apply to this PR.

Screenshots/Videos

Android: HybridApp

Screen.Recording.2025-05-23.at.23.10.53.android.mov

Android: mWeb Chrome

Screen.Recording.2025-05-23.at.23.12.43.andriod.chrome.mov

iOS: HybridApp

Screen.Recording.2025-05-23.at.23.21.44.mov

iOS: mWeb Safari

Screen.Recording.2025-05-23.at.23.14.23.ios.safari.mov

MacOS: Chrome / Safari

Screen.Recording.2025-05-23.at.23.05.04.web.mov

MacOS: Desktop

Screen.Recording.2025-05-23.at.23.07.41.desktop.mov

hoangzinh · 2025-05-23T16:02:35Z

@LorenzoBloedow can you check recordings? They're unable to play

LorenzoBloedow · 2025-05-23T16:13:15Z

@hoangzinh Sorry, I messed up the markdown, should be able to play now.

hoangzinh

LGTM

OSBotify · 2025-05-23T17:06:24Z

✋ This PR was not deployed to staging yet because QA is ongoing. It will be automatically deployed to staging after the next production release.

github-actions · 2025-05-23T19:32:25Z

🚀 Deployed to staging by https://github.com/lakchote in version: 9.1.51-0 🚀

platform	result
🖥 desktop 🖥	success ✅
🕸 web 🕸	success ✅
🤖 android 🤖	success ✅
🍎 iOS 🍎	success ✅

github-actions · 2025-05-26T19:18:14Z

🚀 Deployed to production by https://github.com/arosiclair in version: 9.1.51-6 🚀

platform	result
🖥 desktop 🖥	success ✅
🕸 web 🕸	success ✅
🤖 android 🤖	failure ❌
🍎 iOS 🍎	success ✅

Fix CORS error when downloading PDF

be0416a

LorenzoBloedow requested a review from a team as a code owner May 23, 2025 15:10

melvin-bot bot requested review from hoangzinh and removed request for a team May 23, 2025 15:10

Fix browser lint error

663a83b

hoangzinh approved these changes May 23, 2025

View reviewed changes

melvin-bot bot requested a review from lakchote May 23, 2025 16:23

lakchote approved these changes May 23, 2025

View reviewed changes

lakchote merged commit e9f2925 into Expensify:main May 23, 2025
18 checks passed

github-actions bot mentioned this pull request May 23, 2025

Deploy Checklist: New Expensify 2025-05-23 #62662

Closed

melvin-bot bot mentioned this pull request May 26, 2025

[Due for payment 2025-06-02] [$250] Web - "ERR_FAILED 200" console error when downloading report as PDF #61937

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Fix CORS error when downloading PDF #62652

Fix CORS error when downloading PDF #62652

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LorenzoBloedow commented May 23, 2025 •

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	function getOldDotURLFromEnvironment(environment: Environment): string {
	return OLDDOT_ENVIRONMENT_URLS[environment];
	}

Fix CORS error when downloading PDF #62652

Fix CORS error when downloading PDF #62652

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Explanation of Change

Fixed Issues

Tests

Offline tests

QA Steps

PR Author Checklist

Screenshots/Videos

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Reviewer Checklist

Screenshots/Videos

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