Node js/React app pipeline not building right - reactjs

Following this link below, I can succesfully set up the build stage, but for some reasons I am getting this error message for what concerns the test stage:
I am not able to figure out why I am getting this error message.
https://jenkins.io/doc/tutorials/build-a-node-js-and-react-app-with-npm/#on-windows

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Getting More Specific Error Messages For GraphQL in a React App

I'm working on a ReactJS app that has a lot of GraphQL mutations. I was cleaning up some things and fixing up all the files where mutations were housed, and at some point I got hit with this error:
Uncaught GraphQLError: Syntax Error: Expected Name, found "!".
at syntaxError (syntaxError.mjs:8:1)
Now, I know that this must be due to something in the operations.js folder or somewhere in the React App where a mutation / Query with parameters is house, but that error is giving me little to no help tracking it. I've been unable to find where this could be with the naked eye, is there anything I can do to pinpoint where this error is occuring, i.e. getting a more helpful message than the one above?

gtlfjsx model error: memory access out of bounds, Decoding failed

I'm facing this error as showen in image while rendering this floating-shoe using gltfjsx example and i don't know the real source of bug, any solution or even a hint.
The model was working 100% then i was working on an other component ib the same app without touching the model code then suddenly the error occured...I tried to reinstall the project file from this repos without any other componenet just the shoe model boilerplate, and the same error occured.
Console error

How can I debug a newly cloned React Native app

I am starting to help someone with a new project. This project is React (React Native as is a mobile app).
The project is working fine on her laptop (in her browser), and when I scan the Expo QR code, the app works fine on my Android device.
However, trying to run it in my browser is throwing all these errors:
The 'Can't resolve' error doesn't make sense, because the correct react native files are there. Is this a cache problem? I have tried deleting the .expo/web/cache folder and starting over.
Also, why are there multiple errors in my console, but only one being shown in the information on the actual web page? Does this mean that the single error being shown is causing all the other errors, or it is the only one which needs fixing, or will it show the next error when I fix the one that is being shown?
Thanks
Seems to have been a known problem re babel. See the links below:
https://github.com/babel/babel-loader/issues/173
how to solve this error You may need an appropriate loader to handle this file type

error trying to load the config "relay" for the macro imported from "babel-plugin-relay/macro"

We are trying to upgrade our react project to latest packages including relay (7.0.0). Our application builds and works but we are getting this error message in the console (during build) on every file where we import graphql from 'babel-plugin-relay/macro'. We are doing exactly like documented here adding relay
The error is "There was an error trying to load the config "relay" for the macro imported from "babel-plugin-relay/macro. Please see the error thrown for more information." It is coming from \node_modules\babel-plugin-macros\dist\index.js in getConfig( ).
To understand how other projects were configured, I downloaded another sample relay project / installed it and it had the same problem. Interesting enough there was this recent post in that app's issues list error loading config
The solution noted worked for me (adding that noted .babel-plugin-macrosrc.yml file with empty relay plugin?) but I am not understanding why this is needed or what was causing this seemingly benign error message?

Error "Expected Ext.Base#getX to be Defined"

I'm having this error
Expected Ext.Base#getX to be Defined
after building production version(sencha app build production).
Test version works fine.
Additional details:
error call stack coming from addDeprecations, and has following info
getPageX:"getX"
getPageY:"getY"
version:"4.0"
Any ideas what's the problem?

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