Description of the issue:

Crash on loading multiblock machines.

Crashlog:

Pastebin was having errors so I just made a personal repository for it.
https://github.com/Arkolis/CrashReports/blob/master/crash-2020-07-26_09.55.56-client.txt

Versions & Modlist

IE 0.16-109
Additional_lights-1.16.1-2.1.0
AutoRegLib-1.6-42
Bookshelf-1.16.1-6.1.11
BotanyPots-1.16.1-3.0.4
corpse-1.16.1-1.0.7
Craftable saddles 1.3
Culinaryconstruct 3
Doublebladeaxemod 1.2.1
Extra boats 1.4.0
Happy Trails 0.7.2
Incubation 1.1.0
JEI 7.0.0.6
Luckyblock
Lumberjack 2.1.2
MA Enchants 3.2.1
Mekanism / Additions / Generators / Tools - 10.0.3.426
MouseTweaks 2.13
Optifine Beta U G2 Pre 9 - Probably the culprit, if so Sorry.
Quark Oddities 1.15.2
Quark r2.2-255
Waystones 7.0.2

This mostly seems to happen when away from the chunk with a multi block machine and then return to it loading the chunk back in. Again if this is an optifine error please let me know. Thank you in advance.

Known issue, see #4111. Should be fixed for the next release.