After adding pictures to the slider, loading the page resulted in 'The website encountered an unexpected error'.
error.log gives 'Call to a member function toUrl() on null in \\htdocs\\mypage\\themes\\business_responsive_theme\\business_responsive_theme.theme on line 162'
That's in business_responsive_theme_get_slider_content(), $file = $node->toUrl()->toString();
As far as I can see, there is no $node variable around.
I notice you recently replaced $file = file_load($fid[0]); in that location, that at least works for me.
Configure Slider by adding custom pictures
Closed: outdated
2.0
Code
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