yarn start, problem with the project dependency tree

[cristopherpds]

I have started a project with "yarn create react-app my-app --template typescript" and when I give it the command to start, this skips me, how do I solve it? I have already done the steps indicated but it did not work.

yarn start
yarn run v1.22.5
$ react-scripts start

There might be a problem with the project dependency tree.
It is likely not a bug in Create React App, but something you need to fix locall
y.

The react-scripts package provided by Create React App requires a dependency:

"webpack": "4.44.2"

Don't try to install it manually: your package manager does it automatically.
However, a different version of webpack was detected higher up in the tree:

C:\Users\pc\node_modules\webpack (version: 4.43.0)

Manually installing incompatible versions is known to cause hard-to-debug issues
.

If you would prefer to ignore this check, add SKIP_PREFLIGHT_CHECK=true to an .e
nv file in your project.
That will permanently disable this message but you might encounter other issues.

To fix the dependency tree, try following the steps below in the exact order:

1. Delete package-lock.json (not package.json!) and/or yarn.lock in your proje
   ct folder.
2. Delete node_modules in your project folder.
3. Remove "webpack" from dependencies and/or devDependencies in the package.js
   on file in your project folder.
4. Run npm install or yarn, depending on the package manager you use.

In most cases, this should be enough to fix the problem.
If this has not helped, there are a few other things you can try:

5. If you used npm, install yarn (http://yarnpkg.com/) and repeat the above st
   eps with it instead.
   This may help because npm has known issues with package hoisting which may
   get resolved in future versions.

6. Check if C:\Users\pc\node_modules\webpack is outside your project directory
   .
   For example, you might have accidentally installed something in your home f
   older.

7. Try running npm ls webpack in your project folder.
   This will tell you which other package (apart from the expected react-scrip
   ts) installed webpack.

If nothing else helps, add SKIP_PREFLIGHT_CHECK=true to an .env file in your pro
ject.
That would permanently disable this preflight check in case you want to proceed
anyway.

P.S. We know this message is long but please read the steps above :-) We hope yo
u find them helpful!

error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this comm
and.

[ghost]

In my case, adding SKIP_PREFLIGHT_CHECK=true in .env file fixed this issue.

[Kaleidescope]

But I still can't fix this problem. What should I do？

[ghost]

Are you having same error? Comment your yarn start log below. Maybe create a new discussion if your error is different.

[JM-Mendez]

The conflict happens because a node_modules higher up in the path, in the op's case under "pc" C:\Users\pc\node_modules\webpack, has a different version of that dependency installed in its node_modules.

Either delete that node_modules directory, or uninstall the packages installing it as a sub-dependency.

[nayeftechno]

👍

[MaxPushkov]

Coconut

[MaxPushkov]

Is a very cool vegtable