#1. Goto XAMPP control panel>
#2. Stop Apache and MySql services>
#3. Click on Config of Apache>select php.ini and change the followings:
max_execution_time = 600
max_input_time = 600
memory_limit = 1024M
post_max_size = 1024M
  
#4. Click on Config button of MySql and select my.ini and change:
max_allowed_packet = 1024M
#5. Again Start the services and try.. i hope it will work.