After updating wdio-mediawiki (T283597: Update wdio-mediawiki to 1.1.1 in all repositories) running tests in any repository (except core) fails.
nobody@docker-desktop:/Newsletter$ npm run selenium-test > @ selenium-test /Newsletter > wdio tests/selenium/wdio.conf.js 2021-05-25T16:37:17.394Z ERROR @wdio/config:ConfigParser: Failed loading configuration file: /Newsletter/tests/selenium/wdio.conf.js: Cannot find module 'dotenv' ...
I have tested it with Echo (694515) and Newsletter (684970).
For some reason, test's don't fail in CI.