init.lua: Error detected while processing BufEnter Autocommands

[gasull]

I followed the instructions in the README.md and I get this error when opening any file with Neovim:

No old files
Error detected while processing BufEnter Autocommands for "*.vy":
Error executing lua callback: /home/user/.config/nvim/init.lua:7: attempt to index field 'fs'
 (a nil value)
stack traceback:
        /home/user/.config/nvim/init.lua:7: in function </home/user/.config/nvim/init.lua:3>
Error executing lua callback: /home/user/.config/nvim/init.lua:18: attempt to index field 'fs
' (a nil value)
stack traceback:
        /home/user/.config/nvim/init.lua:18: in function </home/user/.config/nvim/init.lua:14
>
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