Theme Update Error

After I updated the theme, this error appears:

Warning: Invalid argument supplied for foreach() in /home/spreadin/public_html/wp-content/themes/sydney/plugins/class-tgm-plugin-activation.php on line 2036

Hi,

Where did this error appeared? Can you, please post a screenshot?

Kind Regards,
Csaba

The error appeared in every page. Always in the top.

Do you know how do I fix this?