WordPress plugins search error

I am new to WordPress. I am getting

"An Unexpected HTTP Error occurred during the API request.开发者_开发问答"

error when I search for plugin in the plugin installation page. Why do I get this error?

Did you check the timeout limit?

WordPress sets a timeout limit for every request. If that treshold is crossed for your request, you will get this message.

To resolve this issue you can increase the time limit to a higher value. Go to the 'wp-includes' folder of your WordPress installation and edit the http.php file.