This error is in PHPMyAdmin. The error you see above can be fixed by editing your PHP.ini file. In your PHP.ini file you will see a section named File Uploads.
In this section you will see a setting named upload_max_filesize. You can change this value to 0 if you want no limit or change the setting to any size you want. If you want 5MB change it to 5M, for 10mb you would use 10M, and so on and so forth.