Step 5 It is a mess

Here is what appears on my screen in step 5.

[code]
Warning: imagecreatefrompng(): 'images/install/pngtest.png' is not a valid PNG file in /usr/home/www/vhosts/beebarfapiaries.com/public_html/gallery/install.php on line 2127

Warning: imagecreatefromjpe...