[ERR_INVALID_ARG_TYPE] on automation tests pipeline
Automation test jobs fail due to
> yarn dotenv node node_modules/pubsweet-server/src/start
$ /home/simplej/node_modules/.bin/dotenv node node_modules/pubsweet-server/src/start
(node:965) UnhandledPromiseRejectionWarning: TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received undefined