无法将数据导出到Excel电子表格（file_get_contents（http：// localhost：8000 / css / print.css）

First, I got the maximum execution time problem. But then i follow steps from this discussion Maximum execution time in phpMyadmin. I set the max_execution_time = 1000; and max_input_time = 1000 ;.

And I also tried another answers, however, I got a new problem

"file_get_contents(http://localhost:8000/css/print.css): failed to open stream: HTTP request failed!"

I just tested with 3 or 4 records data to export to excel. It all works well when tested on the laptop of my friends.

My laptop

• processor:Intel(R) Celeron(R)
• CPU 1007U @1.5GHz 1.50GHz with
• RAM 4GB 64 bit.

I use Laravel framework and php for the codes. What's wrong?