Failed to load mods: flib/data-util.lua:18: attempt to index local 'prototype' (a nil value)
stack traceback:
flib/data-util.lua:18: in function 'copy_prototype'
double-inserter/data-final-fixes.lua:106: in main chunk

Mods to be disabled:
• double-inserter (2.1.0)

What mods are you running beside this?

{
"mods":
[

{
  "name": "base",
  "enabled": true
},

{
  "name": "elevated-rails",
  "enabled": true
},

{
  "name": "quality",
  "enabled": true
},

{
  "name": "space-age",
  "enabled": true
},

{
  "name": "assembler-pipe-passthrough",
  "enabled": true
},

{
  "name": "BeltRouter-lite",
  "enabled": false
},

{
  "name": "BotChargeRemoved",
  "enabled": true
},

{
  "name": "bulk-materials",
  "enabled": false
},

{
  "name": "double-inserter",
  "enabled": false
},

{
  "name": "DoubleFurnace",
  "enabled": false
},

{
  "name": "Early-3x3-Electric-Furnaces",
  "enabled": true
},

{
  "name": "early-circuit-network",
  "enabled": true
},

{
  "name": "early-logistics11",
  "enabled": true
},

{
  "name": "EarlyvatedRails",
  "enabled": true
},

{
  "name": "EasyLogisticConfiguration",
  "enabled": true
},

{
  "name": "EasyOilRecipesPlus",
  "enabled": true
},

{
  "name": "factorissimo-2-notnotmelon",
  "enabled": true
},

{
  "name": "Flare_Stack_Redux",
  "enabled": true
},

{
  "name": "flib",
  "enabled": true
},

{
  "name": "force-inventory-insert",
  "enabled": true
},

{
  "name": "FusionTrain",
  "enabled": false
},

{
  "name": "InsertersDontNeedPower2",
  "enabled": true
},

{
  "name": "James-Train-Mod",
  "enabled": true
},

{
  "name": "KS_Power",
  "enabled": true
},

{
  "name": "lane-balancers",
  "enabled": true
},

{
  "name": "long-handed-bulk-inserter",
  "enabled": true
},

{
  "name": "LSlib_James_Fork",
  "enabled": true
},

{
  "name": "materials-easy",
  "enabled": false
},

{
  "name": "Mini-Trains-Lead-the-Way",
  "enabled": false
},

{
  "name": "Mining_Drones",
  "enabled": false
},

{
  "name": "Mini_Trains",
  "enabled": true
},

{
  "name": "ModuleInserterEx",
  "enabled": true
},

{
  "name": "MyQuickStart",
  "enabled": true
},

{
  "name": "no-quality",
  "enabled": true
},

{
  "name": "only-one-platform",
  "enabled": true
},

{
  "name": "pump-anywhere",
  "enabled": true
},

{
  "name": "quarrys",
  "enabled": true
},

{
  "name": "Robot-World-Updated-For-SpaceAge",
  "enabled": true
},

{
  "name": "robotworld-continued",
  "enabled": true
},

{
  "name": "Sane-Concrete-2",
  "enabled": true
},

{
  "name": "SchallStartingTech",
  "enabled": true
},

{
  "name": "science-not-invited",
  "enabled": true
},

{
  "name": "super_mega_endless_resources",
  "enabled": true
},

{
  "name": "train-loader",
  "enabled": true
},

{
  "name": "Updated_Construction_Drones",
  "enabled": true
},

{
  "name": "whats_a_spoilage",
  "enabled": true
},

{
  "name": "YourCheapMode",
  "enabled": true
}

]
}

i copy pasted from the mod folder. i did notice your mod is named double inserter in this list, but on the mod selection menu it's called "multi inserter" if that helps

Yeah thats a remnant of its original name. It shouldn't matter

Any chance you could provide a .zip file in the discord?

zip file of? your discord link on the info tab of this mod comes back as invalid btw

I fixed the discord link.

I may not need the zip Afterall. Let me take a look and ill get back to you

I was able to find the issue. One of these mods adds an invisible inserter, so i just made it not look for that particular one. try 2.2.1

ok thank you

edit: yay it loaded. thank you >^.^<