Next JS deployment on vercel constantly failing - reactjs

My Next JS deployed site's vercel build is constantly failing.Here's the screenshot of the error.
I don't exactly know what's happening. Everything works fine locally.

After those steps in the screenshot.. it will continue and you are suppose to see similar to the following

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plyr-react package gives type error calling this.listeners.global on Heroku, but loads fine

For my companies site, we are trying to load a list of podcasts, and using the plyr-react npm package to do so. I have built the implementation for this and it runs fine locally, but when we merged the PR into staging which automatically deploys to heroku, we get an error locally in the console which is in the image attached below. I've pulled the latest staging branch a few times, and have gone to this page and it works fine on my local development setup. However, it just gives a white screen and gives use this error below. Any help would be much appreciated. We have no clue what is causing this error
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Can't deploy react app (issues with build folder)

So I have built a react app from scratch using npx create-react-app. Everything was going great and I decided to deploy it, to which I hit a lot of problems. Using BlueHost has the host, I accessed the CPanel and inserted the build folder, which i used npm run build to create. The website loaded correctly on chrome, however issues within Safari and Mobile browsers emerged, the page was empty.
After doing further research, I decided that the issue was in deployment and not dependencies. I came to this conclusion because I was able to run a local server on both Chrome and Safari, to which the website worked. If it was a dependency issue, it would not have worked on the local server.
So, I decided to start debugging the build folder. However, this is where an issue emerged, I could not load it at all on a server. I tried using serve -s build, but that directed me to an error screen, 404: the requested path could not be found. If I try to plainly use the index.html, open with browser method on my build, it directs my to an empty page with an invalid url, file:///Users/danieldobrovolskiy/Documents/optimal-exterior/build/index.html.
Apologies if my question is vague or incoherent in someway. I'm seriously confused with the deployment process and have no idea what to even ask. All help is appreciated! Let me know if further information is needed.[
Have you set a homepage in package.json? it should be like "homepage": "./" if you're deploying off the main folder of the webserver

Github-Pages deployement issue

I have worked on an organization whose entire account was deleted by mistake but was later restored. Now I am trying to deploy a project in this org with gh-pages. Everything works or seems fine like to commits and all, unless I try to deploy the project. When I run the command npm run deploy the feedback I get is "published". But when I go to github and look for the website it says Error 404.
I have looked into the deployment log and found
this
I have tried every possible way to deploy a project using gh-pages and I have followed its procedure carefully. I found nothing useful which can solve this issue.
Thankyou in advance.

my react project wont start back up using local host?

I am trying to update my react portfolio but to do that i have to be able to work on it. I have it up on heroku working and online. I pulled it up on my code editor and I do npm start and it compiles successfully but it wont go onto my localhost. Im wondering if anybody has an idea of why it wont come up. thanks a bunch
i think you can put your project in github and uplaod it to heroku through your repository and then you can change you code , run it in localhost and changes will automatically get applied to your protfolio online

Deploying working react cosmosdb app from local to Azure

So I am new with working with react and have followed this tutorial here to assist me. All runs fine following these videos and all locally, but after doing a npm run build and then pushing to Azure via a local git repo, the UI runs as expected, but whenever the UI tries to hit the Express/Node backend, it gets an error that I am not understanding how to resolve. Looking at the build scripts that runs on both, I do not see where or if I need to change an environment variable as it is already hitting the correct port on Azure. What I get is the following:
What do I need to revise for this? Since webpack with the build script in create-react-app seems to do what it needs to, I am not quite sure where things are going wrong.

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