Crash report: https://pastebin.com/UAVCmUZu
Building this contraption and puting a minecart or a furnace minecart crashes the game. The chassis range is not the case, tested both with 8 and 1 setting, both in creative and survival. (reproducable)

Considering this was fixed almost a year ago, i will close this issue report. Thanks for clearing things up

Rail is important tho

This is a compatibility issue with "Effortless Building", as they do not yet account for fake players in their event handlers.

https://bitbucket.org/Requios/effortless-building/src/74d74390d230a5404a31138a81010fc2529d190d/src/main/java/nl/requios/effortlessbuilding/EventHandler.java#lines-63

This is a compatibility issue with "Effortless Building", as they do not yet account for fake players in their event handlers.

https://bitbucket.org/Requios/effortless-building/src/74d74390d230a5404a31138a81010fc2529d190d/src/main/java/nl/requios/effortlessbuilding/EventHandler.java#lines-63

so, how can i fix it? just remove the effortless building mod?

Should work, I tested your contraption with only Create and it works fine.

Effortless Building mod creator here. This issue is now fixed (in version 2.23 of Effortless Building).