[$250] Login - Web - Onyx console error when opening the login site

[jponikarchuk]

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Version Number: 9.1.30-0
Reproducible in staging?: Yes
Reproducible in production?: Yes
If this was caught on HybridApp, is this reproducible on New Expensify Standalone?: N/A
If this was caught during regression testing, add the test name, ID and link from TestRail: https://expensify.testrail.io/index.php?/tests/view/5957614
Email or phone of affected tester (no customers): N/A
Issue reported by: Applause Internal Team
Device used: Windows 10 / Chrome
App Component: Other

Action Performed:

1. Open Chrome incognito and press F12 to open the console
2. Navigate to https://staging.new.expensify.com/

Expected Result:

There shouldn't be any console errors.

Actual Result:

Onyx console error when opening the login site.

Workaround:

Unknown

Platforms:

• Android: Standalone
• Android: HybridApp
• Android: mWeb Chrome
• iOS: Standalone
• iOS: HybridApp
• iOS: mWeb Safari
• MacOS: Chrome / Safari
• MacOS: Desktop

Screenshots/Videos

1.mp4

2.txt

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[melvin-bot]

Triggered auto assignment to @sakluger (Bug), see https://stackoverflow.com/c/expensify/questions/14418 for more details. Please add this bug to a GH project, as outlined in the SO.

[nyomanjyotisa]

Proposal

Please re-state the problem that we are trying to solve in this issue.

Login - Web - Onyx console error when opening the login site

What is the root cause of that problem?

We set canBeMissing to false on some of the useOnyx on Expensify.tsx

App/src/Expensify.tsx

Lines 97 to 107 in 7e5a333

	const [account] = useOnyx(ONYXKEYS.ACCOUNT, {canBeMissing: true});
	const [session] = useOnyx(ONYXKEYS.SESSION, {canBeMissing: false});
	const [lastRoute] = useOnyx(ONYXKEYS.LAST_ROUTE, {canBeMissing: true});
	const [userMetadata] = useOnyx(ONYXKEYS.USER_METADATA, {canBeMissing: true});
	const [isCheckingPublicRoom] = useOnyx(ONYXKEYS.IS_CHECKING_PUBLIC_ROOM, {initWithStoredValues: false, canBeMissing: false});
	const [updateAvailable] = useOnyx(ONYXKEYS.UPDATE_AVAILABLE, {initWithStoredValues: false, canBeMissing: false});
	const [updateRequired] = useOnyx(ONYXKEYS.UPDATE_REQUIRED, {initWithStoredValues: false, canBeMissing: false});
	const [isSidebarLoaded] = useOnyx(ONYXKEYS.IS_SIDEBAR_LOADED, {canBeMissing: false});
	const [screenShareRequest] = useOnyx(ONYXKEYS.SCREEN_SHARE_REQUEST, {canBeMissing: true});
	const [focusModeNotification] = useOnyx(ONYXKEYS.FOCUS_MODE_NOTIFICATION, {initWithStoredValues: false, canBeMissing: false});
	const [lastVisitedPath] = useOnyx(ONYXKEYS.LAST_VISITED_PATH, {canBeMissing: false});

On first load on incognito all will be empty

What changes do you think we should make in order to solve the problem?

set canBeMissing to true on all useOnyx on Expensify.tsx

What specific scenarios should we cover in automated tests to prevent reintroducing this issue in the future?

N/A

What alternative solutions did you explore? (Optional)

N/A

[mohit6789]

🚨 Edited by proposal-police: This proposal was edited at 2025-04-19 13:58:04 UTC.

Proposal

Please re-state the problem that we are trying to solve in this issue.

Login - Web - Onyx console error when opening the login site

What is the root cause of that problem?

When we first time open the page in incognito mode lastVisitedPath is not exist and we pass canBeMissing: false here. So lastVisitedPath is must to present inside the Onyx. But for the first time lastVisitedPath is not present due to this we are getting error for lastVisitedPath.

What changes do you think we should make in order to solve the problem?

To fix this issue we need to set canBeMissing: true only for lastVisitedPath key like below. We don't need to change in other keys because we already set default values for other keys when Onyx init from here. But here LAST_VISITED_PATH is undefined so we need to set canBeMissing: true.

Solution 1

const [lastVisitedPath] = useOnyx(ONYXKEYS.LAST_VISITED_PATH, {canBeMissing: true});

Or

Solution 2

We need to return some initial data from here

What specific scenarios should we cover in automated tests to prevent reintroducing this issue in the future?

NA

What alternative solutions did you explore? (Optional)

To fix this issue we need to set initWithStoredValues: false for lastVisitedPath key.

const [lastVisitedPath] = useOnyx(ONYXKEYS.LAST_VISITED_PATH, {initWithStoredValues: false, canBeMissing: true});

[ChavdaSachin]

Proposal

Please re-state the problem that we are trying to solve in this issue.

Login - Web - Onyx console error when opening the login site

What is the root cause of that problem?

RCA - When a user opens the the app for the first time from incognito tab - the value of lastVisitedPath is missing from Onyx, and hence a console error is triggered, since it's expected to be present during app initialization.

App/src/Expensify.tsx

Line 107 in b8b86db

const [lastVisitedPath] = useOnyx(ONYXKEYS.LAST_VISITED_PATH, {canBeMissing: false});

• But Why is is missing even though lastVisitedPath values are initialized here ?
  => Because we only initialize lastVisitedPath value for native devices and not for web devices since we don't want to reset the value of lastVisitedPath key, so that user always would be redirected to lastVisitedPath between app revisits.
  And hence initializing lastVisitedPath for web may cause some side effects.

What changes do you think we should make in order to solve the problem?

• Since this problem may only happen on login page which would only be loaded when user is not logged in we should pass canBeMissing = true only on login page(ie. when no user is logged in).
• To do so we could make use of isAnonymousUser function which returns true when user is not logged in.
  

  App/src/libs/actions/Session/index.ts

  Line 219 in 7e5a333

  function isAnonymousUser(sessionParam?: OnyxEntry<Session>): boolean {

• And conditionally pass the value of canBeMissing argument to handle this sole exception while keeping the goodness of canBeMissing = false for rest of the app other than login page.

    const [lastVisitedPath] = useOnyx(ONYXKEYS.LAST_VISITED_PATH, {canBeMissing: isAnonymousUser() || false});

App/src/Expensify.tsx

Line 107 in b8b86db

const [lastVisitedPath] = useOnyx(ONYXKEYS.LAST_VISITED_PATH, {canBeMissing: false});

What specific scenarios should we cover in automated tests to prevent reintroducing this issue in the future?

NA

What alternative solutions did you explore? (Optional)

Optionally we could make use of Navigation module to check for current path and conditionally pass canBeMissing = true in case the current page is login page.
To implement this, we might need to move this code block here

App/src/Expensify.tsx

Line 106 in b8b86db

const [focusModeNotification] = useOnyx(ONYXKEYS.FOCUS_MODE_NOTIFICATION, {initWithStoredValues: false, canBeMissing: false});

so that navigation path is initialized before retrieving the value of lastVisitedPath from Onyx DB.

Reminder: Please use plain English, be brief and avoid jargon. Feel free to use images, charts or pseudo-code if necessary. Do not post large multi-line diffs or write walls of text. Do not create PRs unless you have been hired for this job.

[sakluger]

Question for people who posted proposals: Does this console error negatively affect end users in any way? If so, what problem is caused for end users?

[ChavdaSachin]

No this console error does not effect end users any how.
This console errors are only a means to catch bugs in advanced.

When canBeMissing is passed value - false, that indicates this particular object should be present in the onyx value store or else it would trigger console error in staging and production and would provide an alert in dev env.

So philosophy for the key is - pass false for the objects which are absolutely necessary to render the page and could potentially crash the page/app in case values are missing in onyx store, so to catch any potential bug prior to a crash due to missing values.

Find more context here - #58499

cc. @sakluger

[sakluger]

@iwiznia tagging you because you were assigned to the GH issue linked in the previous comment. Do you think we should fix this console error, or can we just close the issue given that it doesn't affect end users?

[iwiznia]

Yes we should fix it, having no console errors is part of the check lists.
Also canBeMissing should not be alerting/logging (I added that to the check list here #60848)

We discussed a couple of canBeMissing bugs here https://expensify.slack.com/archives/C03TQ48KC/p1745496127741719 I assume this is one of those, but in any case it should be assigned to whoever introduced the log line and counted as a regression.