PHP Fatal Errors – Header

Hi,

First of all I love the minimal design and functionality of this theme. Especially the drop-down menu for mobile and the social media icons on header and footer. I would love to continue using this theme because it completely agrees with my blog style!

Nevertheless I have 2 main issues:

1.

Since the last update on October 2017 I’ve been getting PHP FATAL ERRORS related to the header.
At first I didn’t give the much importance but my SEO manager is telling me those header errors in my theme / site can affect my SEO score… and suggested me to either contact you for a fix or try another theme.

This is the error/debug log for March 2018:

[04-Mar-2018 21:34:04 America/Denver] PHP Fatal error: Call to undefined function get_header() in /home4/yoogzyco/public_html/wp-content/themes/olsen-light/404.php on line 1
[04-Mar-2018 21:34:04 America/Denver] PHP Fatal error: Call to undefined function get_header() in /home4/yoogzyco/public_html/wp-content/themes/olsen-light/404.php on line 1
[15-Mar-2018 04:39:25 America/Denver] PHP Fatal error: Call to undefined function language_attributes() in /home4/yoogzyco/public_html/wp-content/themes/olsen-light/header.php on line 2
[15-Mar-2018 04:39:25 America/Denver] PHP Fatal error: Call to undefined function language_attributes() in /home4/yoogzyco/public_html/wp-content/themes/olsen-light/header.php on line 2
[15-Mar-2018 21:28:58 America/Denver] PHP Fatal error: Call to undefined function get_header() in /home4/yoogzyco/public_html/wp-content/themes/olsen-light/404.php on line 1
[15-Mar-2018 21:28:59 America/Denver] PHP Fatal error: Call to undefined function get_header() in /home4/yoogzyco/public_html/wp-content/themes/olsen-light/404.php on line 1
[25-Mar-2018 05:41:48 America/Denver] PHP Fatal error: Call to undefined function language_attributes() in /home4/yoogzyco/public_html/wp-content/themes/olsen-light/header.php on line 2
[25-Mar-2018 05:41:48 America/Denver] PHP Fatal error: Call to undefined function language_attributes() in /home4/yoogzyco/public_html/wp-content/themes/olsen-light/header.php on line 2
[27-Mar-2018 19:23:49 America/Denver] PHP Fatal error: Call to undefined function language_attributes() in /home4/yoogzyco/public_html/wp-content/themes/olsen-light/header.php on line 2
[27-Mar-2018 19:23:51 America/Denver] PHP Fatal error: Call to undefined function language_attributes() in /home4/yoogzyco/public_html/wp-content/themes/olsen-light/header.php on line 2
[29-Mar-2018 01:43:44 America/Denver] PHP Fatal error: Call to undefined function get_header() in /home4/yoogzyco/public_html/wp-content/themes/olsen-light/index.php on line 1
[29-Mar-2018 01:43:44 America/Denver] PHP Fatal error: Call to undefined function get_header() in /home4/yoogzyco/public_html/wp-content/themes/olsen-light/index.php on line 1

2. When I tried to use the latest WordPress VIDEO WIDGET functionality (which uses iframes) my site showed another header error:

Error parsing header X-XSS-Protection: 1; mode=block; report=https://www.google.com/appserve/security-bugs/log/youtube: insecure reporting URL for secure page at character position 22. The default protections will be applied.

Can you help with these issues so I can keep using your amazing theme? Thank you!

The page I need help with: [log in to see the link]