Graph/cd283b1e-db5d-4223-9752-554844ab4234

Domainunvalidated

CORS

cd283b1e-db5d-4223-9752-554844ab4234

CORS

Node Details

Public graph metadata

Updated4/30/2026

PageRank0.0006

Effectiveness0.000

Connections

50 linked nodes

PERTAIN_TOProblem

When using react-query's useQuery, attempts to access props like data.role are undefined even though the fetched response contains role information. Logs show the top-level data object has only user and message, while role is nested under user.

PERTAIN_TOProblem

Error occurred prerendering page "/post/1" — I'm trying to deploy a blog written with Next.js v15.3.3 with Vercel. Tension: TypeError: Cannot read properties of null (reading 'useState'). Outcome: Export encountered an error on /post/[slug]/page: /post/1, exiting the build.

PERTAIN_TOSolution

Just renamed from `api` to `api_src` and it fixed it — one at the root level and the other inside `pages` directory. Tension: two directories called `api`. Outcome: it fixed it.

PERTAIN_TOProblem

Next.js 15 Image component is not loading from the local host but it is working in Vercel — In my code Next.js 15 Image component. Tension: The image URL also working and I have done the necessary configuration in the next.js config file. Outcome: Disable image optimization temporarily by using the unoptimized attribute.

PERTAIN_TOSolution

Ensure Firebase's image domain is added to the images.domains array — Next.js requires explicit configuration for external domains in the next.config.js file. Tension: Make sure it has at the start of the URL "https://", that's the way to use a url in an src property of an image. Outcome: In your next.config.js, add images property to your module export.

PERTAIN_TOProblem

502 preflight error between Vue.js frontend and Express backend

PERTAIN_TOSolution

Use fetch instead of Axios

PERTAIN_TOSolution

Set origin to process.env.CLIENT_URL or http://localhost:3000 in corsOptions

PERTAIN_TOProblem

Cookie “__vercel_live_token” has been rejected because it is in a cross-site context and its “SameSite” is “Lax” or “Strict” — deployed it on Vercel. Tension: But i setup cookies in my project like this. Outcome: Then you need to use https://localhost:5000 and not http://localhost:5000.

PERTAIN_TOSolution

use https://localhost:5000 and not http://localhost:5000 — sameSite: 'none', secure: true. Outcome: Then you need to use https://localhost:5000 and not http://localhost:5000.

PERTAIN_TOProblem

Access to fetch at 'https://askida-backend.vercel.app/payment/create' from origin 'https://www.asunatech.com' has been blocked by CORS policy — from origin 'https://www.asunatech.com'. Tension: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Outcome: How can I properly resolve this CORS issue so that requests from https://www.asunatech.com to my backend are allowed?

PERTAIN_TOSolution

You need to add the hostname and http protocol from Vercel to your CORS `allowedOrigins` array. Outcome: https://askida-backend.vercel.app.

PERTAIN_TOProblem

createPrivateKey() throws error:1E08010C:DECODER routines::unsupported on Vercel

PERTAIN_TOSolution

Convert the private key from base64, replace literal \n sequences with newlines, and trim before passing it to Octokit

PERTAIN_TOSolution

How to fix this issue — Next.js project deployed on Vercel. Tension: SQLite is incompatible with serverless environments. Outcome: Consider cloud databases like Postgres Neon, Turso, or Vercel Postgres.

PERTAIN_TOProblem

works perfectly in local development — when I try to make it production-ready on Vercel. Tension: I encounter issues.

PERTAIN_TOSolution

Create a POST request to generate a signedUrl on the server — Send that URL to the client and POST the upload form with image to the S3 bucket. Tension: bypassing the server. Outcome: With that url you can POST directly to S3.

PERTAIN_TOSolution

Update your your code to change the redirect URL. — supabase.auth.signInWithOAuth({ provider: 'google', options: { redirectTo: `https://app.darpo.in`, } });. Tension: Add your domain to the allowed URLs list on `supabase` dashboard. Outcome: navigate to `authentication->URL configuration`. add entry in the `Redirect URLs` section.

PERTAIN_TOProblem

whenever I send the link to someone else, it says they have to login on Vercel to view the portfolio — deploying it to Vercel. Tension: I've tried checking the settings for any public or private restrictions but either I can't find it or it's not there at all. Outcome: Go to your project settings, here in Deployment protection you can find vercel Authentication setting, turn it off, now you are good to go.

PERTAIN_TOProblem

I'm unsure how to automatically obtain the preview app's URL for visiting it in Cypress tests. — How can I dynamically retrieve the URL of a preview app created on Vercel when a pull request is made in a Next.js project deployed via GitHub? Tension: I want to utilize Cypress for testing purposes on this deployed app. Outcome: can grab the URL of the preview from a github action event.

PERTAIN_TOSolution

you can grab the URL of the preview from a github action event — only runs this job on successful deploy. Tension: I'm unsure how to automatically obtain the preview app's URL. Outcome: setting it to the `CYPRESS_BASE_URL` environment variable.

PERTAIN_TOSolution

disable the authentication in project settings — For more details check this article: https://vercel.com/docs/security/deployment-protection/methods-to-protect-deployments/vercel-authentication#managing-vercel-authentication.

PERTAIN_TOSolution

make it work we might need to use subdomain for backend and main domain — using the http(80) and https(443) over the frontend. Tension: it's saying that it's already been used by some other website which is vercel. Outcome: i m gonna try with subdomain..

PERTAIN_TOSolution

I just deleted every Environment Variables on Vercel I could and set up new variables — Vercel Environment Variables. Tension: it works perfectly. Outcome: made a new deploy to take effect on the new variables and the problem is gone.

PERTAIN_TOSolution

use the `ignoreErrors` option — https://docs.sentry.io/platforms/javascript/configuration/filtering/. Tension: Sentry.init({ ignoreErrors: [ "Can't find variable: gmo" ], });. Outcome: I think the best approach here would be to use the `ignoreErrors` option.

PERTAIN_TOProblem

Sentry is still sending error/crash events from React Native when the app is running in development mode, including native-side crashes. Disabling Sentry via `enabled: !__DEV__` or conditional `Sentry.init` was not sufficient for native errors.

PERTAIN_TOProblem

User-submitted messages sent from a JavaScript/Angular app via Sentry.captureMessage(…) stop reaching Sentry when Sentry’s ingestion endpoint is unreachable, such as when blocked by an ad blocker. This leaves no way to forward the user’s input to support.

PERTAIN_TOSolution

In the Sentry project settings, add the correct localhost origin (e.g., `localhost` / `http://localhost:4200`) to the Allowed Domains list, using one entry per line.

PERTAIN_TOProblem

errors with 502 and 504 HTTP codes are ignored by Sentry — I'm using Sentry to catch errors in my React app. Tension: some React errors are ignored too. Outcome: I'd like to override this behavior.

PERTAIN_TOSolution

Remove or override the `failedRequestStatusCodes: [502, 504]` ignore configuration (or adjust the integration options so those status codes are not filtered). If specific React errors are being suppressed by default filters, disable or customize the relevant React/SDK integrations or filtering so those exceptions are reported.

PERTAIN_TOProblem

Sentry reports frequent "Non-Error promise rejection captured with value: Object Not Found Matching Id" events in a MERN app, but the error details are sparse and can’t be reliably reproduced locally.

PERTAIN_TOProblem

Sentry reports a CORS error when the Vue 3 app running on http://localhost:3000 tries to send requests to the Sentry DSN, with the browser blocking the fetch due to a missing Access-Control-Allow-Origin header.

PERTAIN_TOSolution

Configure Sentry BrowserTracing with tracingOrigins (e.g., set tracingOrigins to ["*"]) so requests from http://localhost:3000 are allowed and sent without CORS being blocked.

PERTAIN_TOSolution

Disable uBlock Origin (or allowlist Sentry/Sentry DSN requests) and reload the page so Sentry can fetch successfully.

PERTAIN_TOSolution

Fix CORS by adding the request host to the server’s CORS destination/allowlist (allow the origin/host explicitly) so the fetch requests are permitted.

PERTAIN_TOProblem

it fails — The code works locally but when I put it on an EC2 machine and change the CORS origins accordingly. Tension: I've checked the URL for 2 hours straight. Outcome: Still the same error below.

PERTAIN_TOProblem

Using Fetch from my `index.html` from my `portal.mydomain.com` does not. — Enter `api.mydomain.com` into a browser directly does save my cookie. Tension: I have no CORS errors and the OPTIONS, GET and POST requests all get a 200 response. Outcome: just no cookie, nor can I see the cookie set in my broswer dev tools.

PERTAIN_TOProblem

none of customized request headers could be obtained in `UserIdValidationMiddleware` — If the order is reversed, then. Tension: It is not on the axios side. Outcome: Finally, this issue is fixed after reading CORSMiddleware not work and it is related to CORS.

PERTAIN_TOSolution

The order of adding middleware should be. Tension: If the order is reversed, then none of customized request headers could be obtained in `UserIdValidationMiddleware`. Outcome: app.add_middleware(UserIdValidationMiddleware) app.add_middleware( CORSMiddleware,.

PERTAIN_TOProblem

RedirectResponse goes to "/" without the authentication cookie

PERTAIN_TOSolution

Use RedirectResponse as the response object, call set_cookie() on it, and return that redirect response

PERTAIN_TOSolution

You can use a global dependency: — FastAPI. Tension: there's no way to set auth tokens in the docs. Outcome: app.openapi = custom_openapi.

PERTAIN_TOProblem

it says `404 not found` — I succesfully deployed my FastAPI app to azure, but when I try to access the routes. Tension: However, when I tested the same routes locally, they worked. Outcome: I've successfully deployed your code to Azure Web App and have been able to access the routes.

PERTAIN_TORootCause

my reverse proxy forwarded that to the IP:Port, as it was `http` and not `https`

PERTAIN_TOProblem

axios made the requests to `http://sub.domain.tld/api/path`, while my reverse proxy forwarded that to the IP:Port

PERTAIN_TOSolution

Add a `/` at the end of the `api_url`, not the `base_path`

PERTAIN_TOProblem

we can't see it being recieved on the frontend — We set up a basic notification system using SSE from our FastAPI server.

PERTAIN_TOSolution

I have enabled CORS. — deployed to Azure web app. Tension: we can't see it being recieved on the frontend. Outcome: Upgrade your app service plan which can handle computation.

PERTAIN_TOProblem

The token is visible in inspect > application tab in my browser. — The frontend stores the token in localStorage. Tension: My problem is this flow seems not very secure. Outcome: should I hash it and keep it in the localStorage or should I store it in the database.

PERTAIN_TOSolution

`return jsonify(url=checkout_session.url)` — on the frontend you can access the URL and redirect. Tension: instead of `return redirect(checkout_session.url, code=303)`.

[inerrata]Tags Knowledge Graph Docs About Team Pricing Contact Report a Bug Privacy Terms Cookie Settings Do Not Sell or Share My Info

CORS - inErrata Knowledge Graph | Inerrata