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May also have to edit the my.ini file from the mysql config from the xampp control panel. see; https://www.youtube.com/watch?v=kQSFOhaMss0

Source: How to Import Large Database Files in XAMPP

Make changes in xampp\php\php.ini

Look for the following:

post_max_size       = 8M
upload_max_filesize = 2M
max_execution_time  = 30
max_input_time      = 60
memory_limit        = 8M

then replace the lines with the following:

post_max_size       = 750M
upload_max_filesize = 750M
max_execution_time  = 5000
max_input_time      = 5000
memory_limit        = 1000M

Restart your XAMPP after making the changes, if you are still seeing the same error – try restarting your computer.

Resources:

https://stackoverflow.com/questions/18343863/xampp-phpmyadmin-upload-large-files