I tried the demo and almost immediately got this:
Error
ui/objects/text.lua:31: bad argument #1 to 'setf' (string expected, got nil)
Traceback
[love "callbacks.lua"]:228: in function 'handler'
[C]: in function 'setf'
ui/objects/text.lua:31: in function 'object'
ui/lorescreen.lua:26: in function <ui/lorescreen.lua:3>
ui/modesequence.lua:12: in function <ui/modesequence.lua:1>
classselection.lua:1163: in function 'startNewGame'
classselection.lua:1174: in function 'mousereleased'
ui/elements/button.lua:96: in function <ui/elements/button.lua:87>
utils/input.lua:323: in function 'relativeMouse'
main.lua:280: in function <main.lua:280>
[love "callbacks.lua"]:154: in function <[love "callbacks.lua"]:144>
[C]: in function 'xpcall'