Well, to get rid of this you need to set phpMyadmin variable to either 0 that is unlimited or whichever value in seconds you find suitable for your needs. Or you could always use CLI(command line interface) to not even get such errors(For which you would like to take a look at this link.
Now about the error here, first on the safe side make sure you have set PHP parameters properly so that you can upload large files and can use maximum execution time from that end. If not, go ahead and set below three parameters from C:\xampp\php\php.ini file,
- max_execution_time=3000000 (Set this as per your req)
Once that’s done get back to finding phpMyadmin config file named something like “config.default.php”. On XAMPP you will find it under “C:\xampp\phpMyAdmin\libraries” folder. Open the file called
config.default.php and set :
$cfg['ExecTimeLimit'] = 0;
Once set, restart your MySQL and Apache and go import your database.