Fix error message when kafka is not installed #1249

	name: mkdocs-main

	on: pull_request

	jobs:
	publish-main:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: set dev version
	working-directory: ./java
	run: echo "DEV_VERSION=$(mvn org.apache.maven.plugins:maven-help-plugin:2.1.1:evaluate -Dexpression=project.version \| grep -Ev 'Download\|INFO\|WARNING')" >> $GITHUB_ENV

	- uses: actions/setup-python@v5
	with:
	python-version: "3.10"

	- name: install deps
	working-directory: ./python
	run: cp ../README.md . && pip3 install -r ../requirements-docs.txt && pip3 install -e .[dev]

	- name: generate autodoc
	run: python3 ./python/auto_doc.py

	- name: Cache local Maven repository
	uses: actions/cache@v2
	with:
	path: ~/.m2/repository
	key: ${{ runner.os }}-maven-${{ hashFiles('java/pom.xml') }}
	restore-keys: \|
	${{ runner.os }}-maven-
	- name: Set up JDK 8
	uses: actions/setup-java@v3
	with:
	java-version: "8"
	distribution: "adopt"

	- name: Build java doc documentation
	working-directory: ./java
	run: mvn clean install javadoc:javadoc javadoc:aggregate -DskipTests && cp -r target/site/apidocs ../docs/javadoc

	- name: setup git
	run: \|
	git config --global user.name Mike
	git config --global user.email [email protected]

	- name: mike deploy docs
	run: mike deploy ${{ env.DEV_VERSION }} dev -u

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