TodoApp tutorial: error after 'Listing tasks' step. Cannot find module .wasp/out/server/src/core/auth.js

[edoloughlin]

Please note the TodoApp still runs even though the error below is present.

Describe the bug
Using wasp v0.1.9
Follow the TodoApp setup steps to the 'Listing tasks' step.
I added the getTasks query to main.wasp and created ext/queries.js. Saved both files (save all to avoid intermediate 'file missing' errors).
Console shows:

Recompiling on file change...
Recompilation on file change succeeded.
Web app: Compiled successfully!
Server: [nodemon] restarting due to changes...
Server: [nodemon] starting `node ./src/server.js`
Server (stderr): (node:589921) ExperimentalWarning: The ESM module loader is experimental.
Server (stderr): internal/modules/run_main.js:54
Server (stderr):     internalBinding('errors').triggerUncaughtException(
Server (stderr):                               ^
Server (stderr):
Server (stderr): Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/datadisk/ed/dev/TodoApp/.wasp/out/server/src/core/auth.js' imported from /datadisk/ed/dev/TodoApp/.wasp/out/server/src/dbClient.js
Server (stderr):     at finalizeResolution (internal/modules/esm/resolve.js:284:11)
Server (stderr):     at moduleResolve (internal/modules/esm/resolve.js:665:10)
Server (stderr):     at Loader.defaultResolve [as _resolve] (internal/modules/esm/resolve.js:755:11)
Server (stderr):     at Loader.resolve (internal/modules/esm/loader.js:97:40)
Server (stderr):     at Loader.getModuleJob (internal/modules/esm/loader.js:243:28)
Server (stderr):     at ModuleWrap.<anonymous> (internal/modules/esm/module_job.js:46:40)
Server (stderr):     at link (internal/modules/esm/module_job.js:45:36) {
Server (stderr):   code: 'ERR_MODULE_NOT_FOUND'
Server (stderr): }
Server: [nodemon] app crashed - waiting for file changes before starting...

To Reproduce
Install wasp-lang 0.1.9, follow TodoApp tutorial steps.

Expected behavior
No errors.

Screenshots

Desktop (please complete the following information):

• OS: Pop_OS! 20.04
• Browser: n/a
• Version: n/a

Smartphone (please complete the following information):
n/a

Additional context
Add any other context about the problem here.
NodeJS v12.18.2

[Martinsos]

Hi @edoloughlin , thanks a lot for reporting this, it was a bug from our side!
I just fixed it and deployed new version of Wasp, 0.1.9.1, download/install it and this should be problem no more.

You mentioned you are doing save all to avoid intermediate 'file missing' errors -> what exactly do you mean by that? Those were the errors you would get from Wasp I guess?

[edoloughlin]

I just saved main.wasp and queries.js using 'Save All' in my editor so the changes would be detected once.

[Martinsos]

@edoloughlin got it! Any specific reason to do that? To avoid error messages from Wasp?