As title, players are unable to connect to the server with mod installed on both sides. (I've tested myself on my two laptops and one of them work, one of they don't)
Client shows: "An established connection was aborted by the software in your host machine (but it works fine to join other server)", on Server it just says "Took too long to log in", anyways, debug logs:
Some of the names and information are change due to privacy (logs provided by other user)
Server Debug Log: https://pastebin.com/3WJjwV8M
Client Debug Log: https://pastebin.com/yVd5nxWP
Repository: https://bitbucket.org/kaneka/planttech2/src/1.16.x/
Thanks in advance.