Uncaught TypeError, react-dom-3ae15c20.js

1

Hi there,

I am developing a Web app that uses Leaflet. It works well locally and did not give me any error. I deployed successfully on Render, but when I ran it, it gave this error:

Uncaught TypeError: Cannot read properties of undefined (reading ‘__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED’) at react-dom-3ae15c20.js:9:5345

Does somebody know what is causing this error?

Thanks,

Alejandro

2

Hi there,

Typically this sort of error pops up because the service is using an incompatible version of Node. Did you explicitly specify which version of Node you need during the build/deploy process, or as an environment variable?

Regards,
Mike

Render Support Engineer, MT (UTC-7)

3

Hi Mike,
I didn’t specify the nodejs version. I am going to specify the version. I use node v18.17.1.
Thanks,
Alejandro

4

Hi there,

Hopefully that will resolve the problem, as Render’s current default is v14.17.0. The Render service will fall back on our default unless you explicitly tell it to use a different version.

Regards,
Mike

Render Support Engineer, MT (UTC-7)

5

Hi Mike,

I tried the three options, one each time, but none of them resolved the problem.

option 1
NODE_VERSION: 18.17.1

option 2
.node-version file with the node version line

option 3
“engines”: {
“node”: “>=18.17.0 <19.0”
}

Thanks,
Alejandro

6

Hi there,

Gotcha. As a next step, have you done any online research on this error? A brief search I did brought up a few possible causes, one being that React is not getting installed during the build process. Are you running npm install in the build command?

A couple links I found that discuss the error:

Hope that helps!

Regards,
Mike

Render Support Engineer, MT (UTC-7)

7

Hi Mike,
I think that something to do with the web pack config in vite that it’s broken for the project. To fix it, I created a new vite project, installed the dependencies first, copied the files into the src folder and deployed the project again. It worked.
Thanks,
Alejandro

8

So glad you were able to get the problem resolved! Thanks for sharing what worked.

Regards,
Mike

Render Support Engineer, MT (UTC-7)