Self-Hosted Site: Create Post: "Something went wrong The response from the Jetpack site could not be verified."

[Danrancan]

Description

I am connected to my site hosted on a (LEMP Server) private domain via the Wordpress iOS app. When I try to publish a post on iOS, I get the following error message that pops up:

Something went wrong
The response from the Jetpack site could not be verified.
OK

I hit "OK" and it just returns me to the post edit screen.

What is going on here?
Why can't I publish a post on my Wordpress iOS app? Please help me debug this. Thanks.

Step-by-step reproduction instructions

Go to iOS app.
Select "My Site" .
Select "Posts".
Hit "+" icon.
Add a title
Write something
Hit "+' button
Select "Image"
Select "Take a Photo"
"Snap a photo with my camera"
Select "Use Photo"
Select "Publish"
Screen drops to Draft without publishing
Tap on "Arrow pointing in a half circle" icon, just above the "Failed to insert media. Tap for more info.".
Pop-up opens with the following message:

Media Options
cURL error 52: Empty reply from the server
Stop upload
Retry
Dismiss

I hit "Retry"
Blue Photo upload bar starts to fill up. Then it dissapears and gives me the screen that says:

Failed to insert media.
Tap for more info.

This cycle repeats itself.

Screenshots, screen recording, code snippet

No response

Environment info

Latest version of iOS and iOS App.
Wordpress Server = LEMP (Linux, Nginx, Mariadb, PHP8.3)

Please confirm that you have searched existing issues in the repo.

• Yes

[dangermattic]

Thanks for reporting! 👍

[jkmassel]

Hi @Danrancan, a few questions:

1. Do you have any security plugins installed?
2. Can you check that your site passes the tests on https://xmlrpc.blog?
3. Can you check that your site passes the tests on https://testing-tool.wpmt.co?

If it doesn't pass these automated checks, hopefully the tool will point you in the right direction, and if not we'd be keen to know what sort of errors so that we can help further!