learnReact

I am practicing on saving data into MongoDb using Node.js.

I have set up Express server and created a Mongoose model but when I try to save some data through Postman it keeps returning an ObjectParameterError.

Mongoose version is 5.5.13 and Express version is 4.17.1.

Connecting to MongoDb through Mongoose has no problem since it does not return any errors at least, but the problem is when I am trying to save some data with a post request.

Here is my post request from my server.js:

I am setting up my environment to start developing react native apps. I keep getting the following error:

PS C:\map\development\learnreact\react-native\helloworld> react-native run-android Starting JS server... Building and installing the app on the device (cd android && gradlew.bat installDebug)...

Configure project :app Observed package id 'platform-tools' in inconsistent location 'C:\Users\bheka\AppData\Local\Android\Sdk\platform-tools' (Expected 'C:\Users\bheka\AppData\Local\Android\Sdk\platform-tools\platform-tools') Checking the license for package Android SDK Build-Tools 27.0.3 in C:\Users\bheka\AppData\Local\Android\Sdk\platform-tools\licenses Warning: License for package Android SDK Build-Tools 27.0.3 not accepted. Checking the license for package Android SDK Platform 26 in C:\Users\bheka\AppData\Local\Android\Sdk\platform-tools\licenses Warning: License for package Android SDK Platform 26 not accepted.

FAILURE: Build failed with an exception.

• What went wrong: A problem occurred configuring project ':app'.

  Failed to install the following Android SDK packages as some licences have not been accepted. platforms;android-26 Android SDK Platform 26 build-tools;27.0.3 Android SDK Build-Tools 27.0.3 To build this project, accept the SDK license agreements and install the missing components using the Android Studio SDK Manager. Alternatively, to transfer the license agreements from one workstation to another, see http://d.android.com/r/studio-ui/export-licenses.html Using Android SDK: C:\Users\bheka\AppData\Local\Android\Sdk\platform-tools

• Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 2s Could not install the app on the device, read the error above for details. Make sure you have an Android emulator running or a device connected and have set up your Android development environment: https://facebook.github.io/react-native/docs/getting-started.html

I have accepted licenses using .\sdkmanager --licenses but no luck. I have reinstalled the sdk using the sdk manager in android studio with no luck. Anyone know what I should do?

For a Quick demo purpose, i need to get the actual

from here : React JSX Style Tag Error on Render is working but this need to edit all line of my balise and i don't have the time for that.

I also tried this : https://medium.learnreact.com/the-style-tag-and-react-24d6dd3ca974

But unfortunately it's not working :/

I'm looking for a quick solution where i only need to edit the beginning and the end of my

I am new to webpack. I am learning react and building environment for it using webpack.

I have webpack-config.js

I get an TypeError: Cannot read property 'map' of undefined error when I run gulp. I don't understand why, as I do have 4 .jsx files located in the src folder. I'm running node v6.11.0.

My files

I'm relatively new to Webpack and am trying to create a Universal React app using https://github.com/erikras/react-redux-universal-hot-example. I've included jQuery using: