Multiple errors/warning in WP Dachboard

Today I discovered that Aegeaus has multiple warnings when I open the WordPress Admin Dashboard. What’s up? I’m using version 4.1 and these are the errors:

Warning: DOMDocument::load() [domdocument.load]: StartTag: invalid element name in http://hb-themes.com/home/feed/, line: 5 in /home/deb70204/domains/splendesco.nl/public_html/wp-content/themes/AegaeusWP/functions.php on line 463

Warning: DOMDocument::load() [domdocument.load]: StartTag: invalid element name in http://hb-themes.com/home/feed/, line: 5 in /home/deb70204/domains/splendesco.nl/public_html/wp-content/themes/AegaeusWP/functions.php on line 463

Warning: DOMDocument::load() [domdocument.load]: StartTag: invalid element name in http://hb-themes.com/home/feed/, line: 5 in /home/deb70204/domains/splendesco.nl/public_html/wp-content/themes/AegaeusWP/functions.php on line 463

Warning: DOMDocument::load() [domdocument.load]: StartTag: invalid element name in http://hb-themes.com/home/feed/, line: 5 in /home/deb70204/domains/splendesco.nl/public_html/wp-content/themes/AegaeusWP/functions.php on line 463

Warning: DOMDocument::load() [domdocument.load]: EntityRef: expecting ';' in http://hb-themes.com/home/feed/, line: 5 in /home/deb70204/domains/splendesco.nl/public_html/wp-content/themes/AegaeusWP/functions.php on line 463

Warning: DOMDocument::load() [domdocument.load]: EntityRef: expecting ';' in http://hb-themes.com/home/feed/, line: 5 in /home/deb70204/domains/splendesco.nl/public_html/wp-content/themes/AegaeusWP/functions.php on line 463

Warning: DOMDocument::load() [domdocument.load]: error parsing attribute name in http://hb-themes.com/home/feed/, line: 9 in /home/deb70204/domains/splendesco.nl/public_html/wp-content/themes/AegaeusWP/functions.php on line 463

Warning: DOMDocument::load() [domdocument.load]: attributes construct error in http://hb-themes.com/home/feed/, line: 9 in /home/deb70204/domains/splendesco.nl/public_html/wp-content/themes/AegaeusWP/functions.php on line 463

Warning: DOMDocument::load() [domdocument.load]: Couldn't find end of Start Tag b.length line 9 in http://hb-themes.com/home/feed/, line: 9 in /home/deb70204/domains/splendesco.nl/public_html/wp-content/themes/AegaeusWP/functions.php on line 463

Warning: DOMDocument::load() [domdocument.load]: Opening and ending tag mismatch: META line 3 and head in http://hb-themes.com/home/feed/, line: 10 in /home/deb70204/domains/splendesco.nl/public_html/wp-content/themes/AegaeusWP/functions.php on line 463

Warning: DOMDocument::load() [domdocument.load]: Opening and ending tag mismatch: head line 2 and html in http://hb-themes.com/home/feed/, line: 13 in /home/deb70204/domains/splendesco.nl/public_html/wp-content/themes/AegaeusWP/functions.php on line 463

Warning: DOMDocument::load() [domdocument.load]: Premature end of data in tag html line 1 in http://hb-themes.com/home/feed/, line: 13 in /home/deb70204/domains/splendesco.nl/public_html/wp-content/themes/AegaeusWP/functions.php on line 463

You are using Aegaeus theme. Version 4.1.