how to solve [this site can t be reached the connection] this error?

In my application some times this type of error occur. 
This error from network or the application side. how to find out?

@kvanaraj,

We need more information. Where did you see this error? on the screen? Did you check the log files? Is this the full error message? This might be a database connection error. When does this error happen in the application?

@kvanaraj,

We need more information.  Where did you see this error? on the screen?  Did you check the log files?  Is this the full error message?  This might be a database connection error.  When does this error happen in the application?

I attached the error page while loading. some times it shows. cannot find the error.

Attached Files

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I attached the error page while loading. some times it shows. cannot find the error.

That error could be any one of the following

• The web server isn't running
  
• The web server doesn't understand the URL - for a lot of different reasons
  
• The network issue e.g. it's down or misconfigured, or a firewall is blocking the site,
  

In general, the problem may happens for failing on DNS lookup . DNS is that network address that translates the website name to its internet address. Most often it causes for not getting the internet connection or misconfigured internet or network settings. Another reason could be the firewall preventing Google Chrome to load the webpage. In most cases  Flush Your DNS Cache is solve this problem:

Code:

sudo killall -HUP mDNSResponder

Once the command is executed, OSX will prompt for the administrator password as confirmation to proceed. Also, here are some other possible solutions for This Site Can’t Be Reached, these solutions will try to minimize or remove the error completely and takes you to your desired website in your Chrome browser.

• Restart Your Internet Connection
  
• Clear browser cache, history and cookies
  
• Reset Chrome browser settings
  
• Reset Wi-Fi Modem
  
• Restart DNS client
  
• Change IPv4 DNS Address
  
• Reset the Chrome profile Sync
  
• Remove browser extension from Chrome