Problem in mailchip using api using nodejs - api

this is the problem I got using mailchip Api using nojejs, express, bodyParser. Please help me to solve this?

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Glitch project shows Cannot Get error . How to solve it

While integrating WhatsApp business API
https://developers.facebook.com/docs/whatsapp/sample-app-endpoints#cloud-api-sample-app-endpoint
I will simply add my WhatsApp_Token and Verify_Token But when I share my project on chrome browser via project link
It will show This error to me.
Cannot GET /
I found lot but didn't get any proper answer that will solve my problem.
Thanks in Advance.

How can I use React Native as frontend and CodeIgniter 3 as a backend?

I have Program in Codeigniter 3 i would like to extend it version in React Native but i couldn't find any hooks or code connect them each other if its possible can anyone show an example with code of login or something to connect them together in an efficient way. please?
Would like to an example program connecting each other(RN and Ci)
You can use codeigniter as an REST API layer. You can use the following package to create REST server with codeigniter.
codeigniter-restserver
And, then use react/ react-native to consume those APIs.
Hope that answers your question.
Thanks

Difference between authenticate in browser vs not in Postman?

I not hugely experienced with API's, but I was wondering the difference in Postman with using the 'Authorize using Browser' below Callback URL and not using it. (I'm trying to connect to Microsoft Dataverse using Web API) When I don't use it a pop up comes up fine and I can sign in and authentication goes great. But if I use the browser it won't work. Now, I don't have Azure Admin rights to set up callback URL's in my environment so I imagine that is part of the issue, I'm just wondering why it works one way and not the other. I was trying to replicate in python and am getting the same error as trying to use browser in postman. I would like to understand what backend process Postman is using in the non-browser version so I can replicate if possible. I followed Microsoft's example in the link below as well.
Postman Example
https://learn.microsoft.com/en-us/learn/modules/common-data-service-web-api/3-postman?ns-enrollment-type=learningpath&ns-enrollment-id=learn-dynamics.integrate-power-platform

using express-graphql server in reactnative?

I am new in graphql, would you please help me, I have a server for myself. I want to know may I use express-graphql for the server-side code and get query in a reactnative(mobile app) application through Apllo client?
Yes, there is no problem using React Native as the frontend for your Express server. You can connect your GraphQL either with Apollo or Relay Modern. There are other options for server side, like Koa (http://koajs.com/)
GraphCool is also an easy to go platform to build your server: https://www.graph.cool/
You can find amazing tutorials here: https://www.howtographql.com/
This post is really good to get started too: https://dev-blog.apollodata.com/full-stack-react-graphql-tutorial-582ac8d24e3b
Or you can follow the official docs of Apollo GraphQL: https://www.apollographql.com/docs/react/
Or Learn Apollo docs: https://www.learnapollo.com/tutorial-react/react-01/
Hope it helps.

Instagram Api is not working in my server

I am developing an application using instagram Api. The app is working fine in test server. but when i changed it into clients server it is not. please help me. my php version 5.3. if instagram api needs any other reqiurement??
Thanks in advance..
For future searchers, his issue was likely due to not updating the application's url setting to the clients url.