[GH-ISSUE #2682] Test Server Reachability crashes the container. #1847

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opened 2026-02-26 07:32:42 +03:00 by kerem · 1 comment

kerem commented

2026-02-26 07:32:42 +03:00

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Originally created by @SUB0PT1MAL on GitHub (Mar 14, 2023).
Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/2682

Checklist

Have you pulled and found the error with jc21/nginx-proxy-manager:latest docker image?
- Yes
Are you sure you're not using someone else's docker image?
- Yes
Have you searched for similar issues (both open and closed)?
- Yes

Describe the bug
The container crashes when trying to test server reachability:

[app ] [3/14/2023] [8:03:36 AM] [SSL ] › ℹ info Testing http challenge for xxx.xxxxxxx.xxx
[app ] Uncaught SyntaxError: Unexpected end of JSON input
[app ] FROM
[supervisor ] service 'app' exited (got signal SIGILL).
[supervisor ] service 'app' exited, shutting down...
[supervisor ] stopping service 'nginx'...
[supervisor ] service 'nginx' exited (with status 0).
[finish ] executing container finish scripts...
[finish ] all container finish scripts executed.

Nginx Proxy Manager Version
v2.9.19

To Reproduce
Steps to reproduce the behavior:

Go to add an SSL certificate
Add the DNS name accept the terms and conditions, dont use DNS challenge
Click on "Test Server Reachability" or click "Save"
During the "Test Server Reachability" process the container will crash and the UI returns the eror message "Communication with the API failed, is NPM running correctly?"

Expected behavior
The test should return a success or a fail depending on if the server is reachable from the internet.

Operating System
Tested on Unraid.

Originally created by @SUB0PT1MAL on GitHub (Mar 14, 2023). Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/2682 **Checklist** - Have you pulled and found the error with `jc21/nginx-proxy-manager:latest` docker image? - Yes - Are you sure you're not using someone else's docker image? - Yes - Have you searched for similar issues (both open and closed)? - Yes **Describe the bug** The container crashes when trying to test server reachability: [app ] [3/14/2023] [8:03:36 AM] [SSL ] › ℹ info Testing http challenge for xxx.xxxxxxx.xxx [app ] Uncaught SyntaxError: Unexpected end of JSON input [app ] FROM [supervisor ] service 'app' exited (got signal SIGILL). [supervisor ] service 'app' exited, shutting down... [supervisor ] stopping service 'nginx'... [supervisor ] service 'nginx' exited (with status 0). [finish ] executing container finish scripts... [finish ] all container finish scripts executed. **Nginx Proxy Manager Version** v2.9.19 **To Reproduce** Steps to reproduce the behavior: 1. Go to add an SSL certificate 2. Add the DNS name accept the terms and conditions, dont use DNS challenge 3. Click on "Test Server Reachability" or click "Save" 4. During the "Test Server Reachability" process the container will crash and the UI returns the eror message "Communication with the API failed, is NPM running correctly?" **Expected behavior** The test should return a success or a fail depending on if the server is reachable from the internet. **Operating System** Tested on Unraid.

kerem

2026-02-26 07:32:42 +03:00

closed this issue
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kerem commented

2026-02-26 07:32:43 +03:00

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@SUB0PT1MAL commented on GitHub (Mar 14, 2023):

Duplicated of:
https://github.com/NginxProxyManager/nginx-proxy-manager/issues/2580

@SUB0PT1MAL commented on GitHub (Mar 14, 2023): Duplicated of: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/2580

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Reference

starred/nginx-proxy-manager-NginxProxyManager#1847

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