pxt serve --rebundle leads to Error: Missing dependencies in config of: core

[fabianhugo]

Describe the bug
Build errors when doing the full development setup including setting up pxt and pxt-common packages as described in the readme or the setup.cmd file. The server still somehow starts up and opens a local version of makecode arcade. Maybe related observation: When I open the Jumpy Plattformer project, the walking animation of the character is missing, so it moves without moving its feet. I attached the fullterminaloutput.txt, and here an exerpt of the error messages:

Error: Missing dependencies in config of: core
    at Object.userError (/home/bert/firmware/arcade/pxt-arcade/node_modules/pxt-core/built/pxt.js:98941:25)
    at Package.validateConfig (/home/bert/firmware/arcade/pxt-arcade/node_modules/pxt-core/built/pxt.js:113447:23)
    at Package.parseConfig (/home/bert/firmware/arcade/pxt-arcade/node_modules/pxt-core/built/pxt.js:113676:18)
    at Package.loadAsync (/home/bert/firmware/arcade/pxt-arcade/node_modules/pxt-core/built/pxt.js:113735:22)
    at loadDepsRecursive (/home/bert/firmware/arcade/pxt-arcade/node_modules/pxt-core/built/pxt.js:113897:35)
    at Package.loadAsync (/home/bert/firmware/arcade/pxt-arcade/node_modules/pxt-core/built/pxt.js:113901:19)
    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
    at async loadDepsRecursive (/home/bert/firmware/arcade/pxt-arcade/node_modules/pxt-core/built/pxt.js:113897:25)
    at async Package.loadAsync (/home/bert/firmware/arcade/pxt-arcade/node_modules/pxt-core/built/pxt.js:113901:13)
    at async loadDepsRecursive (/home/bert/firmware/arcade/pxt-arcade/node_modules/pxt-core/built/pxt.js:113897:25)
    at async Package.loadAsync (/home/bert/firmware/arcade/pxt-arcade/node_modules/pxt-core/built/pxt.js:113901:13)
    at async loadDepsRecursive (/home/bert/firmware/arcade/pxt-arcade/node_modules/pxt-core/built/pxt.js:113897:25)
    at async MainPackage.loadAsync (/home/bert/firmware/arcade/pxt-arcade/node_modules/pxt-core/built/pxt.js:113901:13)
    at async Promise.all (index 0)
    at async buildTargetCoreAsync (/home/bert/firmware/arcade/pxt-arcade/node_modules/pxt-core/built/pxt.js:163163:28)
    at async internalBuildTargetAsync (/home/bert/firmware/arcade/pxt-arcade/node_modules/pxt-core/built/pxt.js:162344:9)
    at async buildTarget (/home/bert/firmware/arcade/pxt-arcade/node_modules/pxt-core/built/pxt.js:163418:13)
    at async buildAndWatchTargetAsync (/home/bert/firmware/arcade/pxt-arcade/node_modules/pxt-core/built/pxt.js:163450:5) {
  isUserError: true
}

To Reproduce
Steps to reproduce the behavior:

1. Set up pxt, pxt-common packages, and pxt-arcade as described in the readme
2. Run pxt serve --rebundle
3. Watch the terminal output

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Desktop

• OS: Ubuntu 22.04, Ubuntu 24.04