Warning: Cannot modify header information

  • Hi


    I've built a site on my development server and just uploaded it to the clients cheap shared hosting with one.com and I'm seeing the following errors;


    Warning: Cannot modify header information - headers already sent by (output started at /customers/2/7/b/cosmic-people.co.uk/httpd.www/about-us/our-promise-to-you.php:1) in /customers/2/7/b/cosmic-people.co.uk/httpd.www/perch/core/lib/PerchUtil.class.php on line 1399 Warning: Cannot modify header information - headers already sent by (output started at /customers/2/7/b/cosmic-people.co.uk/httpd.www/about-us/our-promise-to-you.php:1) in /customers/2/7/b/cosmic-people.co.uk/httpd.www/perch/core/lib/PerchUtil.class.php on line 1400 Warning: Cannot modify header information - headers already sent by (output started at /customers/2/7/b/cosmic-people.co.uk/httpd.www/about-us/our-promise-to-you.php:1) in /customers/2/7/b/cosmic-people.co.uk/httpd.www/perch/core/lib/PerchUtil.class.php on line 1401 Warning: Cannot modify header information - headers already sent by (output started at /customers/2/7/b/cosmic-people.co.uk/httpd.www/about-us/our-promise-to-you.php:1) in /customers/2/7/b/cosmic-people.co.uk/httpd.www/perch/core/lib/PerchUtil.class.php on line 1409


    I remember ages ago I had a similar issue and it was white space at the top of the index file, but this time this isn't the case, so I'm not sure what to try? It mentions /about-us/our-promise-to-you.php but that file doesn't have any white space at the top either;


    https://www.dropbox.com/s/uoac…%20at%2016.17.29.png?dl=0