this post was submitted on 02 Jun 2024
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Photon

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Photon for Lemmy

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Failed to fetch the page (discuss.tchncs.de)
submitted 4 months ago* (last edited 4 months ago) by [email protected] to c/[email protected]
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I have an issue with proton. I hosted the software on my own homeserver with portainer.

Often it comes the failure "TypeError: NetworkError when attempting to fetch resource."

when i try to upload images

or

when I try to post something

in photon. It doesnt work in Firefox (Mac) or Safari (iOS, MacOS).

The instance is not the problem. It works with voyager.

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[–] [email protected] 4 points 4 months ago (3 children)

Do you have it running under HTTPS? Since all of the API calls are HTTPS, you'll need to run it either under localhost or through a reverse proxy with SSL enabled.

Also, did you set PUBLIC_INSTANCE_URL environment variable to the domain of your home instance?

e.g. PUBLIC_INSTANCE_URL=discuss.tchncs.de

If you open your browser console, it should show some errors to indicate the problem.

[–] [email protected] 3 points 4 months ago (1 children)

On my Homeserver runs an NGINX Proxy Manager. There is HTTPS activated. The proxy use HTTP to connect to the local Docker Container.

Internet --> NGINX Proxy Manager --> local Docker Container

The Instance discuss.tchncs.de is not mine, but I have set the enviroment "PUBLIC_INSTANCE_URL=discuss.tchncs.de".

The errors are paste here

[–] [email protected] 2 points 4 months ago* (last edited 4 months ago)

Errors are definitely indicating CORS is the issue. Specifically, that the Access-Control-Allow-Origin header is missing:

Grund: CORS-Kopfzeile 'Access-Control-Allow-Origin' fehlt). Statuscode: 503.

Are you perhaps (accidentally) stripping out that header in your NPM config? Or do you have a browser extension that might be doing so?

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