App crashes on Send Now in Owntracks logging mode (iOS 26.3.1)

[magnusbjarnason]

Description

Overland crashes when using the "Owntracks" logging mode and tapping "Send Now". The app works perfectly in "All Data" mode sending GeoJSON to a custom endpoint, but crashes when switched to Owntracks logging mode.

Steps to Reproduce

1. Install from App Store (v1.3)
2. Grant "Always" location permission
3. Configure Server URL to a valid HTTPS endpoint
4. Set Logging Mode to "All Data" — works fine, sends data successfully
5. Change Logging Mode to "Owntracks"
6. Change Server URL to an OwnTracks Recorder endpoint (https://example.com/pub?u=user&d=device)
7. Tap "Send Now" → crash

After this crash, deleting and reinstalling the app did not resolve the issue — the app continued to crash on Send Now.

Environment

• Device: iPhone 15 Pro
• iOS version: 26.3.1 (a)
• Overland version: 1.3 (App Store)
• Server: Valid HTTPS endpoint (Caddy reverse proxy with wildcard cert via Tailscale). Confirmed working — the endpoint accepts POST requests and returns {"result":"ok"} via curl.

Expected Behavior

Switching to Owntracks logging mode and tapping Send Now should send the latest location in OwnTracks JSON format.

Actual Behavior

App crashes immediately on Send Now.

Notes

The "All Data" GeoJSON mode was working perfectly before switching to Owntracks mode. Would be happy to test a TestFlight build if one is available.

[aaronpk]

Hm that's no good. I don't think it's an iOS version issue though, probably something else. I haven't tested the Owntracks code path much. I'm currently running it on my iOS 26.3 phone in the default format.

I don't have access to my development environment at the moment so it will be a week or so before I can look. If you can, make sure crash reporting is turned on and I should be able to see crash logs in the Apple developer console.

[magnusbjarnason]

Sorry about the iOS version mixup in the original report — I was actually on iOS 26.3.1, not 18. Updated the title and description. That tracks with what you said about it not being an iOS version issue.

I'll make sure crash reporting is turned on. Happy to test whenever you get a chance to look at the Owntracks code path. No rush.

[aaronpk]

Just to rule out an https issue, can you confirm that the app can send to the https endpoint with the same cert using the GeoJSON mode?

[magnusbjarnason]

More testing on fresh install (iOS 26.3.1), OwnTracks Recorder as server endpoint.

After various configuration changes, the app enters a state where it crashes on:

• Send Now (both All Data and Owntracks logging modes)
• Starting a trip

One observation: the OwnTracks Recorder returns [] (JSON array) instead of {"result":"ok"}. With "Consider HTTP 2XX Successful" OFF, the app shows "Server did not return a JSON object" and doesn't crash. With it ON, data reaches the server ("Last Sent 0.50s") but the app crashes immediately after.

Crash reporting is on.

[aaronpk]

Thanks, that's probably it. It's expecting an object but gets an array. I should be able to fix that easily once I am back at my computer and get the dev environment updated again.