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[No QA] Fix [Sentry: APP-4FK] HybridApp Android NullPointerException in expo TaskService.executeTask - #94145

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mountiny merged 2 commits into
Expensify:mainfrom
software-mansion-labs:@GCyganek/fix-sentry-APP-4FK
Jun 22, 2026
Merged

mountiny merged 2 commits into
Expensify:mainfrom
software-mansion-labs:@GCyganek/fix-sentry-APP-4FK

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Explanation of Change

Patches expo-task-manager to null-guard the headless app loader in TaskService.executeTask(), preventing a fatal Android NPE (Sentry APP-4FK) when JobScheduler delivers GPS updates after process death. Also stops orphaned background location tasks in GPSTripStateChecker when tracking is no longer active.

Fixed Issues

$ #92416
PROPOSAL: N/A

Tests

No QA

This crash is triggered by Android memory pressure during a background JobService wakeup causing the WeakReference<Context> in TaskService to be GC'd. It's not easy to reproduce it.

Offline tests

N/A

QA Steps

No QA

PR Author Checklist

  • I linked the correct issue in the ### Fixed Issues section above
  • I wrote clear testing steps that cover the changes made in this PR
    • I added steps for local testing in the Tests section
    • I added steps for the expected offline behavior in the Offline steps section
    • I added steps for Staging and/or Production testing in the QA steps section
    • I added steps to cover failure scenarios (i.e. verify an input displays the correct error message if the entered data is not correct)
    • I turned off my network connection and tested it while offline to ensure it matches the expected behavior (i.e. verify the default avatar icon is displayed if app is offline)
    • I tested this PR with a High Traffic account against the staging or production API to ensure there are no regressions (e.g. long loading states that impact usability).
  • I included screenshots or videos for tests on all platforms
  • I ran the tests on all platforms & verified they passed on:
    • Android: Native
    • Android: mWeb Chrome
    • iOS: Native
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    • MacOS: Chrome / Safari
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    • I verified that all the inputs inside a form are aligned with each other.
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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.

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@GCyganek

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⚠️ This PR is possibly changing native code and/or updating libraries, it may cause problems with HybridApp. Please check if any patch updates are required in the HybridApp repo and run an AdHoc build to verify that HybridApp will not break. Ask Contributor Plus for help if you are not sure how to handle this. ⚠️

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codecov Bot commented Jun 22, 2026

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Codecov Report

✅ Changes either increased or maintained existing code coverage, great job!

Files with missing lines Coverage Δ
...rc/components/GPSTripStateChecker/index.native.tsx 75.00% <100.00%> (+1.31%) ⬆️
... and 39 files with indirect coverage changes

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💡 Codex Review

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Reviewed commit: 020e752197

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@GCyganek
GCyganek marked this pull request as ready for review June 22, 2026 08:15
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GCyganek requested review from a team as code owners June 22, 2026 08:15
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melvin-bot Bot requested review from flaviadefaria and truph01 and removed request for a team June 22, 2026 08:15
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@truph01 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]

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melvin-bot Bot requested review from a team and mountiny and removed request for a team June 22, 2026 08:15
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@mountiny 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]

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mountiny commented Jun 22, 2026

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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
    • I verified the steps for Staging and/or Production testing are in the QA steps section
    • I verified the steps cover any possible failure scenarios (i.e. verify an input displays the correct error message if the entered data is not correct)
    • I turned off my network connection and tested it while offline to ensure it matches the expected behavior (i.e. verify the default avatar icon is displayed if app is offline)
  • I checked that screenshots or videos are included for tests on all platforms
  • I included screenshots or videos for tests on all platforms
  • I verified that the composer does not automatically focus or open the keyboard on mobile unless explicitly intended. This includes checking that returning the app from the background does not unexpectedly open the keyboard.
  • I verified tests pass on all platforms & I tested again on:
    • Android: HybridApp
    • Android: mWeb Chrome
    • iOS: HybridApp
    • iOS: mWeb Safari
    • MacOS: Chrome / Safari
  • If there are any errors in the console that are unrelated to this PR, I either fixed them (preferred) or linked to where I reported them in Slack
  • I verified proper code patterns were followed (see Reviewing the code)
    • I verified that any callback methods that were added or modified are named for what the method does and never what callback they handle (i.e. toggleReport and not onIconClick).
    • I verified that comments were added to code that is not self explanatory
    • I verified that any new or modified comments were clear, correct English, and explained "why" the code was doing something instead of only explaining "what" the code was doing.
    • I verified any copy / text that was added to the app is grammatically correct in English. It adheres to proper capitalization guidelines (note: only the first word of header/labels should be capitalized), and is either coming verbatim from figma or has been approved by marketing (in order to get marketing approval, ask the Bug Zero team member to add the Waiting for copy label to the issue)
  • If a new code pattern is added I verified it was agreed to be used by multiple Expensify engineers
  • I verified that this PR follows the guidelines as stated in the Review Guidelines
  • I verified other components that can be impacted by these changes have been tested, and I retested again (i.e. if the PR modifies a shared library or component like Avatar, I verified the components using Avatar have been tested & I retested again)
  • If a new component is created I verified that:
    • A similar component doesn't exist in the codebase
    • All props are defined accurately and each prop has a /** comment above it */
    • The file is named correctly
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    • Any internal methods bound to this are necessary to be bound (i.e. avoid this.submit = this.submit.bind(this); if this.submit is never passed to a component event handler like onClick)
    • All JSX used for rendering exists in the render method
    • The component has the minimum amount of code necessary for its purpose, and it is broken down into smaller components in order to separate concerns and functions
  • If any new file was added I verified that:
    • The file has a description of what it does and/or why is needed at the top of the file if the code is not self explanatory
  • If a new CSS style is added I verified that:
    • A similar style doesn't already exist
    • The style can't be created with an existing StyleUtils function (i.e. StyleUtils.getBackgroundAndBorderStyle(theme.componentBG)
  • If the PR modifies code that runs when editing or sending messages, I tested and verified there is no unexpected behavior for all supported markdown - URLs, single line code, code blocks, quotes, headings, bold, strikethrough, and italic.
  • If the PR modifies a generic component, I tested and verified that those changes do not break usages of that component in the rest of the App (i.e. if a shared library or component like Avatar is modified, I verified that Avatar is working as expected in all cases)
  • If the PR modifies a component related to any of the existing Storybook stories, I tested and verified all stories for that component are still working as expected.
  • If the PR modifies a component or page that can be accessed by a direct deeplink, I verified that the code functions as expected when the deeplink is used - from a logged in and logged out account.
  • If the PR modifies the UI (e.g. new buttons, new UI components, changing the padding/spacing/sizing, moving components, etc) or modifies the form input styles:
    • I verified that all the inputs inside a form are aligned with each other.
    • I added Design label and/or tagged @Expensify/design so the design team can review the changes.
  • For any bug fix or new feature in this PR, I verified that sufficient unit tests are included to prevent regressions in this flow.
  • 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
Android: mWeb Chrome
iOS: HybridApp
iOS: mWeb Safari
MacOS: Chrome / Safari

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Thanks! this is patch from upstream, we will monitor using Sentry if the issue was resolved

@mountiny
mountiny merged commit bf3e3c9 into Expensify:main Jun 22, 2026
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🚧 @mountiny has triggered a test Expensify/App build. You can view the workflow run here.

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

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🚀 Deployed to staging by https://github.com/mountiny in version: 9.4.17-0 🚀

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

Bundle Size Analysis (Sentry):

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🤖 No help site changes required.

I reviewed the changes in this PR and confirmed they do not require any updates to Expensify's help site files under docs/articles.

Why: This PR is a native Android crash fix with no user-facing behavior change:

  • A patch to expo-task-manager that null-guards the headless app loader in TaskService.executeTask(), preventing a fatal NPE (Sentry APP-4FK) when JobScheduler delivers GPS updates after process death.
  • A defensive cleanup in GPSTripStateChecker/index.native.tsx that stops orphaned background location tasks when tracking is no longer active.

Both changes are internal robustness/crash fixes. They don't add, remove, or alter any feature, UI element, tab, setting, label, or workflow that the help site documents (GPS distance tracking still behaves the same from the user's perspective). Since no help articles describe the background JobService/headless-task internals being changed here, there's nothing to document.

No draft PR was created since there are no help site changes to make. @GCyganek, let me know if you'd like me to take a closer look at any specific article.

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🚀 Deployed to production by https://github.com/blimpich in version: 9.4.17-3 🚀

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

1 similar comment
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🚀 Deployed to production by https://github.com/blimpich in version: 9.4.17-3 🚀

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

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5 participants