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[GH-ISSUE #3681] Can't login anymore. #2436

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opened 2026-02-26 07:35:34 +03:00 by kerem · 3 comments

kerem commented

2026-02-26 07:35:34 +03:00

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Originally created by @alessiodam on GitHub (Apr 6, 2024).
Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/3681

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
When pressing the login button, I am welcomed with this very satisfying error message:
SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data

Nginx Proxy Manager Version

To Reproduce
Steps to reproduce the behavior:

Input your credentials
press log in

Expected behavior
It should log me in like it did before

Screenshots

Operating System
Ubuntu 22.04 LTS Pro

Additional context
Docker version: Docker version 24.0.5, build 24.0.5-0ubuntu1~22.04.1
Browser: Firefox 124.0.2 (64-bit) - Up To Date
Last time I logged in was 4 days ago I think.

Originally created by @alessiodam on GitHub (Apr 6, 2024). Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/3681  **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** When pressing the login button, I am welcomed with this very satisfying error message: `SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data` **Nginx Proxy Manager Version**  **To Reproduce** Steps to reproduce the behavior: 1. Input your credentials 2. press log in **Expected behavior** It should log me in like it did before **Screenshots** ![image](https://github.com/NginxProxyManager/nginx-proxy-manager/assets/69647028/2793b296-8be6-48e1-8450-6add8e17065f) **Operating System** Ubuntu 22.04 LTS Pro **Additional context** Docker version: `Docker version 24.0.5, build 24.0.5-0ubuntu1~22.04.1` Browser: `Firefox 124.0.2 (64-bit) - Up To Date` Last time I logged in was 4 days ago I think.

kerem

2026-02-26 07:35:34 +03:00

closed this issue
added the
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kerem commented

2026-02-26 07:35:34 +03:00

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@alessiodam commented on GitHub (Apr 6, 2024):

This issue is somehow fixed and I didn't do nothing??

@alessiodam commented on GitHub (Apr 6, 2024): This issue is somehow fixed and I didn't do nothing??

kerem commented

2026-02-26 07:35:34 +03:00

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@thebino commented on GitHub (Apr 12, 2024):

Have you checked the docker logs? There might be any hint as to why the backend service can't start properly. That's why this error appears most likely.

@thebino commented on GitHub (Apr 12, 2024): Have you checked the docker logs? There might be any hint as to why the backend service can't start properly. That's why this error appears most likely.

kerem commented

2026-02-26 07:35:34 +03:00

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Owner

@alessiodam commented on GitHub (Apr 13, 2024):

I noticed that nginx proxy manager requires port 3000, which was in use by another service, I changed the port of the other service and now it works.

@alessiodam commented on GitHub (Apr 13, 2024): I noticed that nginx proxy manager requires port 3000, which was in use by another service, I changed the port of the other service and now it works.

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starred/nginx-proxy-manager-NginxProxyManager#2436

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