powerlevel10k: zsh: unknown function: my_git_formatter

I recently successfully installed the theme but as of a sudden when opening a new terminal it tells me

zsh: unknown function: my_git_formatter                                                                   
                                                                                                         ─╯
_p9k_reset_prompt:5: unknown function: my_git_formatter
                                                                                                         ─╯
_p9k_reset_prompt:5: unknown function: my_git_formatter

I’ve installed it as follows

git clone --depth=1 https://github.com/romkatv/powerlevel10k.git $ZSH_CUSTOM/themes/powerlevel10k

my config

# Enable Powerlevel10k instant prompt. Should stay close to the top of ~/.zshrc.
# Initialization code that may require console input (password prompts, [y/n]
# confirmations, etc.) must go above this block, everything else may go below.
if [[ -r "${XDG_CACHE_HOME:-$HOME/.cache}/p10k-instant-prompt-${(%):-%n}.zsh" ]]; then
  source "${XDG_CACHE_HOME:-$HOME/.cache}/p10k-instant-prompt-${(%):-%n}.zsh"
fi

# Created by newuser for 5.2
# The following lines were added by compinstall

zstyle ':completion:*' completer _expand _complete _ignored _correct _approximate
zstyle ':completion:*' matcher-list 'm:{[:lower:]}={[:upper:]}' 'r:|[._-]=** r:|=**'
zstyle :compinstall filename '/home/aedu/.zshrc'

autoload -Uz compinit
compinit

# End of lines added by compinstall
# Lines configured by zsh-newuser-install
HISTFILE=~/.histfile
HISTSIZE=1000
SAVEHIST=1000
setopt appendhistory autocd extendedglob notify hist_ignore_all_dups
bindkey -e
# End of lines configured by zsh-newuser-install

export LANG=en_US.UTF-8
export VISUAL=vi
export PATH=/home/aedu/bin:/home/aedu/bin/go/bin:/home/aedu/.gem/ruby/2.5.0/bin:/opt/atlassian-plugin-sdk/bin:/opt/flutter/bin:$PATH

# Path to your oh-my-zsh installation.
export ZSH=~/.oh-my-zsh

#ZSH_THEME=agnoster

ZSH_THEME=powerlevel10k/powerlevel10k 

# Which plugins would you like to load? (plugins can be found in ~/.oh-my-zsh/plugins/*)
# Custom plugins may be added to ~/.oh-my-zsh/custom/plugins/
# Example format: plugins=(rails git textmate ruby lighthouse)
# Add wisely, as too many plugins slow down shell startup.
plugins=(
    ansible
    gnu-utils
    git
    rake
    ruby
    go
    gradle
    helm
    python
    ssh-agent
    tmux
    vscode
    kubectl
    history-substring-search
    heroku
)

source $ZSH/oh-my-zsh.sh

# enable color support of ls and also add handy aliases
if [ -x /usr/bin/dircolors ]; then
    test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"
    alias ls='ls --color=auto'
    alias dir='dir --color=auto'
    #alias vdir='vdir --color=auto'

    alias grep='grep --color=auto'
    alias fgrep='fgrep --color=auto'
    alias egrep='egrep --color=auto'
fi

# Alias definitions.
# You may want to put all your additions into a separate file like
# ~/.bash_aliases, instead of adding them here directly.
# See /usr/share/doc/bash-doc/examples in the bash-doc package.

if [ -f ~/.bash_aliases ]; then
    . ~/.bash_aliases
fi

if [ -f ~/.bash_exports ]; then . ~/.bash_exports ; fi
if [ -f ~/.bash_functions ]; then . ~/.bash_functions ; fi
if [ -f ~/.azure_completion ]; then . ~/.azure_completion ; fi

setopt COMPLETE_ALIASES

# https://gnunn1.github.io/tilix-web/manual/vteconfig/
if [ $TILIX_ID ] || [ $VTE_VERSION ]; then
        source /etc/profile.d/vte.sh
fi

# https://github.com/zsh-users/zsh-history-substring-search
#export zsh_plugin_dir=/usr/share/oh-my-zsh/custom/plugins/
#source $zsh_plugin_dir/zsh_history_substring_search/zsh-syntax-highlighting.zsh
#source $zsh_plugin_dir/zsh_history_substring_search/zsh-history-substring-search.zsh
bindkey '^[[A' history-substring-search-up
bindkey '^[[B' history-substring-search-down

# To customize prompt, run `p10k configure` or edit ~/.p10k.zsh.
[[ ! -f ~/.p10k.zsh ]] || source ~/.p10k.zsh