When we upload large files like Plugin and Sample Data XML in WordPress then server not allow to upload large file on server and showing Fatal error. To protect web servers from abuse, there is a time limit set for how long a PHP script can run. Some hosting providers have set this value to a higher level while others may have set it to a lower level. When a script reaches the maximum execution time limit, it results into maximum execution time exceeded error.For resolve Fatal error Add Below code in .htaccess file. This file available in root directory.
# WordPress Maximum execution time of 60 seconds
php_value max_execution_time 29032653