Refrence to /usr/lib/php/20170718/ On yii2 login

I am trying to do log in with the yii2 framework but I am getting a reference error from the yii2 after logging in it is in this way.

PHP Startup: Unable to load dynamic library '' (tried: /usr/lib/php/20170718/ (/usr/lib/php/20170718/ undefined symbol: mysqlnd_global_stats), /usr/lib/php/20170718/ (/usr/lib/php/20170718/ cannot open shared object file: No such file or directory))

I have checked the folder 20170718 there is something called is existing exactly as the error says there is no is not there i checked php.ini but I was not able to find out from where this reference is coming from how can I resolve this error?

This is not a yii issue. Google it

I got the answer