DiffViewOpen throws FileNotFoundError

[domvo]

I installed plenary and diffview with VimPlug. When I try to open it with :DiffViewOpen I get the following error message:

Error executing Lua callback: ...cal/share/nvim/plugged/plenary.nvim/lua/plenary/path.lua:503: FileNotFoundError
stack traceback:
        [C]: in function 'error'
        ...cal/share/nvim/plugged/plenary.nvim/lua/plenary/path.lua:503: in function 'mkdir'
        ...ocal/share/nvim/plugged/plenary.nvim/lua/plenary/log.lua:140: in function 'info'
        ...al/share/nvim/plugged/diffview.nvim/lua/diffview/lib.lua:24: in function 'diffview_open'
        ...l/share/nvim/plugged/diffview.nvim/lua/diffview/init.lua:109: in function 'open'
        ...cal/share/nvim/plugged/diffview.nvim/plugin/diffview.lua:23: in function <...cal/share/nvim/plugged/diffview.nvim/plugin/diffview.lua:22>

System Info:

• neovim 0.8.1
• MacOS 12.3

I triple-checked and both plugins were installed correctly.

Output of :PlugInstall:

- cmp-buffer: Already installed
- fzf: Already installed
- cmp-cmdline: Already installed
- cmp-path: Already installed
- fzf.vim: Already installed
- nvim-cmp: Already installed
- nvim-web-devicons: Already installed
- nerdtree: Already installed
- plenary.nvim: Already installed
- diffview.nvim: Already installed
- vim-fugitive: Already installed
- vim-easymotion: Already installed
- nvim-lspconfig: Already installed
- gruvbox: Already installed
- vim-javascript: Already installed
- vim-terraform: Already installed
- vim-prettier: Already installed
- vim-airline-themes: Already installed
- vim-airline: Already installed
- onehalf: Already installed
- cmp-nvim-lsp: Already installed

I couldn't find anything on Google, unfortunately. Any ideas?

[sindrets]

If I recall correctly this happens when Nvim's cache directory does not exist, or is not writable. You can find the path to where nvim expects to find the cache directory by running:

:echom stdpath("cache")

Make sure that directory exists, and is writable.

[sindrets]

Closing due to inactivity from OP.