Hello Duverney, thanks for reaching out. I managed to reproduce your problem. It seams that when running yarn to install packages, it ignores package-lock.json file and it installs never version of dependencies (which introduce the problem you pointed out).

My suggestion it to try using npm instead (i just tried it on two different machines and it works). Btw, remember to remove node_modules, dist and yarn.lock - see commands below.

• rm -rf node_modules && rm -rf dist && rm yarn.lock
• npm i
• npm run start