apache - Warnings and errors appearing on site after changing ubuntu user permissions Amazon EC2 server -

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my site running on ec2 amazon server under ubuntu/apache2.

my site running fine until changed permissions user 'ubuntu' doing command: 

chown -r ubuntu /var/www/html

now site spitting out warning messages , errors :(

www.kaysboutique.co.uk

i did because wanted able write files via filezilla after following answer:

amazon aws filezilla transfer permission denied

fixed running these:

sudo chown www-data -r /var/www/html

if not fixed, run sudo chown -r www-data /var/www/html


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