Ugdhar

Please post logs, otherwise any suggestions are 100% guesswork

I honestly do not know, I never had problems when I used 1.12, but I am on the current 1.15.2 now. You should just rip off the bandaid and update Topics for old versions like this get closed once a moderator sees them, seeing as they are no longer supported here.

1.12 is no longer supported on this forum due to age. Please update to a modern version to receive support here. More information on supported versions can be found in the LTS link at the top of every page.

I know the official minecraft forums have a modding section, but I don't really go there so I don't know how good the people there are or what versions are supported.

1.12 is no longer supported on these forums due to age. Please update to a modern version to receive support here. More information can be found in the LTS link at the top of every page.

1.12 is no longer supported on these forums due to age. Please update to a modern version to receive support here. More information can be found in the LTS link at the top of every page.

What he means, is that 1.12 is no longer supported on this forum due to age. Please update to a modern version to receive support here. More information on supported versions can be found in the LTS link at the top of every page.

1.12 is no longer supported on these forums due to age. Please update to a modern version to receive support here. More information on supported versions can be found in the LTS link at the top of every page.

I would post debug.log from each the server and client if available.

1.12 is no longer supported on these forums due to age. Please update to a modern version to receive support here. More information on supported versions can be found in the LTS link at the top of every page.

Please post logs from both the server and the client (using spoiler tags or an outside hosting site) as described in the EAQ. Without more information, any attempt at helping would be purely guesses.

1.12 is no longer supported on this forum due to age. Please update to a modern version to receive support here. More information can be found in the LTS link at the top of every page.

What if you try playing without your BDCraft resource pack? Are you using the super ultra mega one with the highest resolution? Try it with vanilla, or a smaller res resource pack and see if it still crashes. edit: also, use F3 to make sure it is using your Nvidia card, and not the built in Ryzen graphics.

1.12 is no longer supported on these forums due to age. Please update to a modern version to receive support here. More information can be found in the LTS link at the top of every page.

Also, 1.8 is no longer supported on these forums due to age. Please update to a modern version to receive support here. More information can be found in the LTS link at the top of every page.

Try ./gradlew in *nix you have to specify it's in the current directory.

Have you tried searching the forums here for "registerFactory" and see what results you get?

1.12 is no longer supported on these forums due to age. Please update to a modern version to receive support here. More information on supported versions can be found in the LTS link at the top of every page.

That log does not appear to be complete, as far as I can see it does not even show the server completing startup nor accepting any client connections.

1.12 is no longer supported on these forums due to age. Please update to a modern version to receive support here. More information on supported versions can be found in the LTS link at the top of every page.

How are you launching your server? Please show the output of java -version from the commandline from the same folder as your server files.

1.8 is no longer supported on this forum due to age. Please update to a modern version to receive support here. More information on supported versions can be found in the LTS link at the top of every page.

https://gist.github.com/williewillus/353c872bcf1a6ace9921189f6100d09a

I think you might be in the wrong place looking for help with this. Or you posted the wrong crash? Does not appear to be any forge being used here, and it's a snapshot version of Minecraft, not a release version.

Make sure you scan through the entire log, you will (usually) eventually find something that makes some kind of sense.