When trying to renew my SSL certificate, I'm getting the Internal Error with the below:
at /opt/nginx-proxy-manager/lib/utils.js:16:13
at ChildProcess.exithandler (node:child_process:421:5)
at ChildProcess.emit (node:events:518:28)
at maybeClose (node:internal/child_process:1101:16)
at ChildProcess._handle.onexit (node:internal/child_process:304:5)
Yes, you seem to be using Nginx Proxy Manager. That's where it goes wrong.
And with regard to the error: no, absolutely no clue, because it's a useless part of the trace made by Node.js and does not convey ANY information about the actual certificate process, a problem which we keep seeing when users use NPM. Most users on this Community refuse to help debugging NPM because it's a pain in the (#*$()#.. Also, you did not fill out the questionnaire which was presented to you when opening this thread in the Help section, but in this case, as we're dealing with NPM, it actually doesn't really matter I guess.. Because NPM.. And that sucks to debug.. All the best and luck to you
Please try the Nginx Proxy Manager support channels. You're most likely not getting any support for that software here until there comes a time when NPM actually provides useful debugging information.
The Internal Error has always been an NPM configuration issue
Usually I say "nearly always" but with this specific error every case I've seen has always been that. As Osiris noted, sadly, NPM has extracted about the most useless part of info that leads people to come here. They have done this for years.