Nginx Proxy Manager fails to generate Let's Encrypt certificates using Cloudflare DNS

[zanatrix]

Describe the bug
Nginx Proxy Manager fails to generate Let's Encrypt certificates using Cloudflare DNS challenge due to package version conflicts between certbot-dns-cloudflare and cloudflare Python packages. The system reports:

1. pkg_resources.VersionConflict: ( Requirement.parse('certbot>=4.1.1' ,CloudFlare=4) )

Nginx Proxy Manager Version
2.12.4 (Also occurs in latest)

To Reproduce

1. Set up NPM with Cloudflare DNS credentials
2. Attempt to request SSL certificate for any domain
3. System fails with dependency errors

Expected behavior
Clean certificate generation using Cloudflare DNS-01 challenge

Operating System

• Docker on Ubuntu 22.04
• Portainer-managed

[wintech147]

I had this same issue. I think. I updated from 2.12.3 to 2.12.4 and I could not log in to my NPM container. Looking at the logs I saw this:

ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts

[7/4/2025] [4:44:45 PM] [Global ] › ✖ error Some plugins failed to install. Please check the logs above CommandError: Some plugins failed to install. Please check the logs above

at /app/lib/certbot.js:39:14

at Immediate.<anonymous> (/app/node_modules/batchflow/lib/batchflow.js:80:9)

at process.processImmediate (node:internal/timers:483:21) {

previous: undefined,

code: 1,

public: false

}

I had to revert back to 2.12.3 for things to work.

[mschout]

I had the exact same issue, had to revert to 2.12.3

[masterwishx]

same issue on Oracle VPS (arm64), is any fix found ?

[bh56]

I was just switching over to Cloudflare as it supports DNS challenge and Squarespace does not. Spent quite a bit of time trying to figure why it wouldn't work. I reverted back to 2.12.3 and was able to add the certificate. Would be nice to be on the most current version though.

[epiccolotto]

I have the same issue, I have tried also with a new installation, and this is the error message when I try to get the Cloudflare certificate:

[7/5/2025] [9:51:40 AM] [Express  ] › ⚠  warning   ERROR: Cannot install certbot-dns-cloudflare==4.0.0 and cloudflare==4.0.* because these package versions have conflicting dependencies.
ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts

[fatexs]

same here, had to revert to 2.12.3

ERROR: Cannot install certbot-dns-cloudflare==4.0.0 and cloudflare==4.0.* because these package versions have conflicting dependencies.

[masterwishx]

@zanatrix
Yep we all have the same issue duplicated in other #4617,#4625,#4629,#4636

[ForsakenRei]

Several duplicated issues now, fortunately we can easily roll it back to 2.12.3.