PuTTY Fatal Error: expected key exchange group packet from server

Hi I am using Putty to ssh to a Centos virtual machine running on virtual box. It was working without any problemn until now when it start throwing the error PuTTY Fatal Error: expected key exchange . . .

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MongoDB create unique index: E11000 duplicate key error collection dup key:{:null}

I am trying to create a unique key on a collection. It fails with the error message: > db.users.createIndex({userid:1},{unique:true}) {         "ok" : 0,     &nbsp . . .

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popover is not a function error

I have a form that use popovers..  and i have the following code inside document ready $(document).ready(function() { $('[data-toggle="popover"]').popover(); }); when the form is . . .

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Hyper-V cannot be installed: The processor does not have the required virtualization capabilities

I have a Windows Server 2016 virtual machine running on VirtualBox and I am trying to add the Hyper-V role on that VM using the Add roles and features wizard. I get the following error message after i . . .

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Javascript: find second largest value in an array?

Sample: myArray = [1, 2, 4, 10, 20,100] How to find second largest value without sorting the array or latering its contents? . . .

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NodeJS Cannot enqueue Handshake after already enqueuing a Handshake

I am trying to insert into MYSQL table some data recieved from AJAX post. Error: Cannot enqueue Handshake after already enqueuing a Handshake.     at Protocol._validateEnqueue (C:\nodejs\n . . .

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MySQL php mysqli How to use the result of SELECT COUNT(*) mysqli_query

Hi, I am using $result = mysqli_query($conn,"SELECT COUNT(*) FROM prod_catalogue WHERE cat_id ='".$catid."' " ) or die(mysqli_error($this->dblink)); How do i get the actual count from result beca . . .

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Reset all settings in Visual Studio 2015

I changed some of the options on Visual Studio 2015 IDE from Tools -> Options menu. How do i reset it all back to default without having to re-install? . . .

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Nodejs TypeError: express.createServer is not a function

Hi I am trying to create a nodejs server running on port 3000. I have already installed express (npm install express). I am getting the following error message TypeError: express.createServer is not . . .

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Laravel Socialite Access Not Configured. Google+ API (truncated...) exception 'GuzzleHttp\Exception

Hi, I am setting up Socialite2.0 on Laravel 5.3. I registered FB and Google apps and configured services.php with credentials. Facebook login is working fine, but Google authentication fails at redi . . .

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CentOS 7 SSH access denied message

I created a new user in Centos and when I try to ssh using that username I get access denied message.Is there anything else I need to do to allow access to this new user? . . .

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Enable native code debugging in VS 2015

I'm using Visual Studio 2015 Community edition to create a Windows IoT background application on VB.NET. When I try to debug with watch on certain variables, i see the message "To inspect the native . . .

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Laravel session expired: Properly handle TokenMismatchException

Hi, I am getting "Whoops, looks like something went wrong" page when session expired. I want to redirect user to login page instead of showing this error message. I am using Laravel 5.3. I think i ne . . .

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Custom Facebook share button without using SDK

I had a simple custom share button using sharer.php  <a href="https://www.facebook.com/sharer/sharer.php?u=myurl.com" target="_blank">Share on FB</a> The  new guidelines say I . . .

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Node.js check if a path is a file or directory

How to check if a path is file or directory? . . .

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