Internal server error while Excel Write

[eluser]Sudz[/eluser]
Hi,

I am writing excel file using PHPExcel library.
When I write file of more than 1000 records normally of 1MB size at a time.
It always gives me internal server error.

Why i am getting this error on file write i don't understand.
Please anybody help me!!!!!

[eluser]Andy Fraley[/eluser]
Check the Apache error log or whatever web server you are using.