When I try to start the server there is an error of the following plan (crash logs are attached). Tried to change versions of underscore and change some settings .cfg file. I'm sorry for my English, I don't know it very well yet.

crash-2019-12-14_00.03.00-server.txt
crash-2019-12-14_00.01.37-server.txt
crash-2019-12-13_22.58.27-server.txt

| LE    | aetherworks                       | 1.12.2-1.0.0.0-beta1 | AetherWorks_1.12.2_1.0.0.0_beta1.jar          | None                                     |

That's the mod that's erroring.