Fatal Error in Plugins Section

Hallo,
could you help me please one more time?

I wanted to open my plugins and install the new one and I saw this message: Fatal error: Using $this when not in object context in /homepages/25/d315697051/htdocs/clickandbuilds/arebodesign/wp-content/plugins/wp-reset/wp-reset.php on line 439

what does it mean:-(?

Regards,
Ilona

Hello there,

Thank you for reporting.

It looks like the error message is indicating that the problem is with the WP Reset plugin. Not with Sydney theme itself. You should disable that plugin; and try contacting to the author to get the exact solution.

Regards,
Kharis