Hello,
on the Joomla 3.6.5 and PHP 7 its problem:
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; plgContentSmartResizer has a deprecated constructor in /plugins/content/smartresizer/smartresizer.php on line 117
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; ismartrescanvasCrop has a deprecated constructor in /plugins/content/smartresizer/smartresizer/smartimagehandler.php on line 22
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; ismartresimgRedim has a deprecated constructor in /plugins/content/smartresizer/smartresizer/smartimagehandler.php on line 610