We are getting an error message "cannot send headers" when accessing our website. A few months back we hired someone on maglance to fix the issue. When accessing the index page, the error message seemed to be fixed by this person, however, the message continued to appear when I made updates in the admin panel and when some customers checked out. Now, the index page has the error message again.
We need a magento expert who has fixed this problem before throughout our entire site. Below is our web link :
Website [url removed, login to view]
Need a quick turnaround as our site is inaccessible.