elpy-format-code errors out and unacceptable latency during text editing

[fpdotmonkey]

Summary

elpy-format-code errors out and text editing has unusably slow latency.

I'm guessing the issue is between the chair and the keyboard, but I can't figure out what might be wrong.

Steps to reproduce

M-x elpy-format-code
; error in process sentinel: peculiar error: "exited abnormally with error code 1"
; Timeout during RPC call fix_code_with_black from backend

Any time I enter a character, there is 1s+ latency before I can enter another character (error in process sentinel: peculiar error: "exited abnormally with error code 1")

My configuration

OS

Ubuntu 20.04

Result of (elpy-config)

Emacs.............: 26.3
Elpy..............: 1.35.0
Virtualenv........: venv (/home/fp/projects/discord_date/venv)
Interactive Python: python3 3.8.10 (/home/fp/projects/discord_date/venv/bin/python3)
RPC virtualenv....: venv (/home/fp/projects/discord_date/venv)
 Python...........: python3 3.8.10 (/home/fp/projects/discord_date/venv/bin/python3)
 Jedi.............: Not found (0.18.1 available)
 Autopep8.........: Not found (1.6.0 available)
 Yapf.............: Not found (0.32.0 available)
 Black............: 22.3.0
Syntax checker....: flake8 (/home/fp/.local/bin/flake8)Emacs.............: 26.3

Elpy configuration in my init.el

(ensure-package-installed 'elpy)  ; installs elpy from melpa/elpa if it isn't already
(require 'elpy)
(elpy-enable)
(setq elpy-rpc-virtualenv-path 'current)
(add-hook 'elpy-mode-hook
	  (lambda ()
	    (add-hook 'before-save-hook
		      'elpy-format-code nil t)))

[JurijsNazarovs]

I believe it happens because jedi is not installed. I have the same issue and would like to do not install jedi and other packages, because it slwos down work with Tramp on ssh file. Did you find a solution on how to suppress this error?

[marc-legendre]

error in process sentinel: peculiar error: "exited abnormally with error code 1"

Something similar happened to me after I installed a new python version (I upgraded an Ubuntu system).

Reinstalling the RPC venv (M-x elpy-rpc-reinstall-virtualenv) fixed this error for me.

[j3pic]

On my system this was caused by installing both the Debian version of Elpy and the GitHub version. Emacs ended up loading parts of Elpy from the Debian package.