diff --git a/src/.beta-installer.lua b/src/.beta-installer.lua
index cfe7963..3e98c68 100644
--- a/src/.beta-installer.lua
+++ b/src/.beta-installer.lua
@@ -43,6 +43,7 @@ local function traverse_and_download(folder_data, prefix)
         local response = http.get(subdir_url)
         if response then
             local body = response.readAll()
+            if not body then return end
             response.close()
             local subdir_data = textutils.unserializeJSON(body)
             traverse_and_download(subdir_data, prefix .. dir.href)
diff --git a/src/lib/primeui.lua b/src/lib/primeui.lua
index 39dc1df..40c9485 100644
--- a/src/lib/primeui.lua
+++ b/src/lib/primeui.lua
@@ -1,6 +1,9 @@
 -- PrimeUI by JackMacWindows
 -- Public domain/CC0
 
+---@alias window ccTweaked.term.Redirect
+---@alias color integer
+
 local expect = require "cc.expect".expect
 
 -- Initialization code
diff --git a/src/modules/inv.lua b/src/modules/inv.lua
index 3e8a3a8..dcc56dd 100644
--- a/src/modules/inv.lua
+++ b/src/modules/inv.lua
@@ -30,7 +30,7 @@ local function sync()
     print("Synced.");
 end
 ---@param itemName string
----@param perip ccTweaked.peripheral.Inventory|nil
+---@param perip ccTweaked.peripheral.Inventory|string|nil
 ---@param maxAmount number|nil
 local function sendItemToSelf(itemName, perip, maxAmount)
     if perip == nil then
@@ -62,7 +62,7 @@ local function sendItemToSelf(itemName, perip, maxAmount)
 
             local ok, moved = pcall(function()
                 ail.performTransfer()
-                --chatbox.tell("hartbreix", tostring(perip) .. " <> " ..  tostring(itemName) .. " <> " .. tostring(toSend) .. " <> " .. tostring(chosenNBT), "debug")
+
                 local amount = ail.pushItems(perip, itemName, toSend, nil, chosenNBT, {
                     ["allowBadTransfers"] = true,
                     ["optimal"] = true
@@ -96,6 +96,8 @@ local function sendItemAwayMultiple(slots, perip, id, maxAmount)
     end
     local srcId = id or turtleId
 
+    if srcId == nil then return end
+
     local itemsInSlots = {}
     for _, slot in ipairs(slots) do
         local item = perip.getItemDetail(slot)
diff --git a/src/modules/ui.lua b/src/modules/ui.lua
index 3cf09b1..7fec5e6 100644
--- a/src/modules/ui.lua
+++ b/src/modules/ui.lua
@@ -23,7 +23,7 @@ local function runUi()
         return refiltered
     end
 
-    local com = getFiltered("")
+    local com = getFiltered()
 
     PrimeUI.clear()
     local updateEntries = PrimeUI.selectionBox(