Error in theme insall

[foysal]

I am getting below error in Magento 1 Store.

There has been an error processing your request

Exception printing is disabled by default for security reasons.

Error log record number: 734948666894

 

I found below line in `734948666894`

a:5:{i:0;s:179:"Cannot send headers; headers already sent in /homepages/0/d762794067/htdocs/clickandbuilds/Primonion/app/code/local/Codazon/Slideshow/sql/slideshow_setup/install-0.1.0.php, line 1";i:1;s:1253:"#0 /homepages/0/d762794067/htdocs/clickandbuilds/Primonion/lib/Zend/Controller/Response/Abstract.php(115): Zend_Controller_Response_Abstract->canSendHeaders(true)

[Manish Mittal]

Hello @foysal

This means that something is getting output to the browser before Magento can flush the output. Check any files you have edited for additional whitespace or missing opening or closing PHP tags.

undo changes if there any you made in core files or flush Magento cache.