Can't get undo-tree to work with evil

Disclaimer: complete noob and not really a programmer. Only use Emacs for org-mode. I keep getting the following error in buffers including init.el and org files, any ideas? evil--check-undo-system: Enable ‘global-undo-tree-mode’ to use undo-tree commands. Add (add-hook ’evil-local-mode-hook ’turn-on-undo-tree-mode) to your init file for undo in non-file buffers. init.el . Any help is much appreciated, can't use org-mode without undo. Also, feel free to make any suggestions to this many years old config. I use Emacs exclusively for note-taking but want to make it as vim-like as possible to reduce cognitive overhead because I use Neovim for everything else.