Theia start fails

[Beetix]

Hi,

I've run docker-compose up to launch the application.

I get the following error during Theia's start:

theia-python | yarn run v1.15.2
theia-python | $ /home/theia/node_modules/.bin/theia start /home/project --hostname=0.0.0.0
theia-python | module.js:550
theia-python |     throw err;
theia-python |     ^
theia-python |
theia-python | Error: Cannot find module '@theia/core/lib/node/main'
theia-python |     at Function.Module._resolveFilename (module.js:548:15)
theia-python |     at Function.Module._load (module.js:475:25)
theia-python |     at Module.require (module.js:597:17)
theia-python |     at require (internal/module.js:11:18)
theia-python |     at Object.<anonymous> (/home/theia/src-gen/backend/main.js:3:14)
theia-python |     at Module._compile (module.js:653:30)
theia-python |     at Object.Module._extensions..js (module.js:664:10)
theia-python |     at Module.load (module.js:566:32)
theia-python |     at tryModuleLoad (module.js:506:12)
theia-python |     at Function.Module._load (module.js:498:3)
theia-python | Done in 0.43s.

Does someone have an idea on where this error comes from?

Thanks