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Restart network manager.

sudo service network-manager restart

Restart the nm applet.

killall nm-applet && nm-applet &

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open terminal and cd to the folder where the png files are present and enter the below command:

find -name '*.png' -print0 | xargs -0 -r mogrify -format jpg *.png

if mogrify is not present then install it using:

sudo apt-get install imagemagick

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delete package-lock.json then try again

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Install chrome using the below cmd:
sudo apt-get install google-chrome-stable

then open the crome using the below cmd:
google-chrome-stable %U --password-store=basic

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Git push requires username and password always:
OR Git pull failed with repository not found message:

git remote set-url origin https://username:[email protected]/repo.git

Now if you are getting the below error while trying to push:

"Error gnutls_handshake() failed: Handshake failed"

then check for the branch permission. no need to create new ssh.

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{
  "categories": [
    {
      "name": "Movies",
      "videos": [
        {
          "description": "Big Buck Bunny tells the story of a giant rabbit with a heart bigger than himself. When one sunny day three rodents rudely harass him, something snaps... and the rabbit ain't no bunny anymore! In the typical cartoon tradition he prepares the nasty rodents a comical revenge.\n\nLicensed under the Creative Commons Attribution license\nhttp://www.bigbuckbunny.org",
          "sources": [
            "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4"
          ],

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var mediaJSON = { "categories" : [ { "name" : "Movies",
        "videos" : [ 
		    { "description" : "Big Buck Bunny tells the story of a giant rabbit with a heart bigger than himself. When one sunny day three rodents rudely harass him, something snaps... and the rabbit ain't no bunny anymore! In the typical cartoon tradition he prepares the nasty rodents a comical revenge.\n\nLicensed under the Creative Commons Attribution license\nhttp://www.bigbuckbunny.org",
              "sources" : [ "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4" ],
              "subtitle" : "By Blender Foundation",
              "thumb" : "images/BigBuckBunny.jpg",
              "title" : "Big Buck Bunny"
            },
            { "description" : "The first Blender Open Movie from 2006",
              "sources" : [ "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ElephantsDream.mp4" ],

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package com.emil.android.util;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.telephony.TelephonyManager;

/**
 * Check device's network connectivity and speed 
 * @author emil http://stackoverflow.com/users/220710/emil

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Error:Project :app declares a dependency from configuration 'compile' to configuration 'default' 
which is not declared in the descriptor for project :<project-name>.

this happens when you have submodules in your project,
to fix this clone using recursive git command:

git clone --recursive https://github.com/developer-id/project.git

now go to the submodule folder and check the git repo version by:

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Amazon ec2 LAMP and FTP installation and setup

Tutorial: Installing a LAMP Web Server on Amazon Linux

Go through this amazon link http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/install-LAMP.html

Associate and Elastic IP address to your EC2 instance.