I am using lsp-mode and company on top of Pyhton files. When I complete a function I am getting follwing error:

Company: backend company-capf error "[yas] ‘yas-expand-snippet’ needs properly setup ‘yas-minor-mode’" with args (post-completion get_job_block_number(requester_address, key, index))

Completed function example:

self.mongo_broker.get_job_block_number(${1:requester_address}, ${2:key}, ${3:index})$0

which should be just: self.mongo_broker.get_job_block_number()

my setup:

(diminish 'yas-minor-mode)
(add-hook 'python-mode-hook 'lsp)
(add-hook 'python-mode-hook #'lsp-deferred)

(setq company-auto-complete t)
(global-set-key (kbd "C-c C-k") 'company-complete)

What may be the reason of this error and how can I resolve it?

// Could be related with following question: Company: backend company-capf error

1 Answer 1


Seems like I was missing (yas-global-mode) call. When I added to my .emacs file problem is resolved.

  • 1
    show exactly what you inserted. Because I have this exact problem.
    – pauljohn32
    Oct 9, 2022 at 20:34

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