Question 1

What causes `Cannot find module` in Node.js?

Accepted Answer

This happens when the package is not installed, the import path is wrong, or node_modules is out of sync. Run `npm install` again, verify the package name, and check if the module is in package.json dependencies.

Question 2

How do I fix `ModuleNotFoundError` in Python?

Accepted Answer

Install the missing package via `pip install <name>` inside the correct virtual environment. Verify with `pip list`. If using a package manager like poetry or uv, use its install command and re-activate the env.

Question 3

What does Cargo `error[E0433]: failed to resolve` mean?

Accepted Answer

A crate or module path is not found. Ensure the crate is listed in Cargo.toml dependencies, run `cargo build` to fetch it, and check you imported the correct path (e.g. `use serde::Deserialize`).

Question 4

Why does npm show `ERESOLVE unable to resolve dependency tree`?

Accepted Answer

Peer dependency conflict. Try `npm install --legacy-peer-deps` or upgrade the conflicting package. Use DepScope compat matrix to find a working version combination.

Question 5

How to fix `ImportError: attempted relative import with no known parent package`?

Accepted Answer

Run the script as a module: `python -m package.module` instead of `python package/module.py`. Alternatively convert to absolute imports.

Error → Fix Database