error_log产生大量这类错误记录,请问什么原因

error_log产生大量这类错误记录,请问什么原因?[16-Nov-2018 19:24:19 UTC] PHP Warning:  Declaration of news::widget($instance) should be compatible with WP_Widget::widget($args, $instance) in /home/a80keneq/public_html/wp-content/themes/HotNewspro/includes/widget.php on line 13
[16-Nov-2018 19:24:19 UTC] PHP Warning:  Declaration of hot::widget($instance) should be compatible with WP_Widget::widget($args, $instance) in /home/a80keneq/public_html/wp-content/themes/HotNewspro/includes/widget.php on line 27
[16-Nov-2018 19:24:19 UTC] PHP Warning:  Declaration of random::widget($instance) should be compatible with WP_Widget::widget($args, $instance) in /home/a80keneq/public_html/wp-content/themes/HotNewspro/includes/widget.php on line 41
[16-Nov-2018 19:24:19 UTC] PHP Warning:  Declaration of comments::widget($instance) should be compatible with WP_Widget::widget($args, $instance) in /home/a80keneq/public_html/wp-content/themes/HotNewspro/includes/widget.php on line 55
[16-Nov-2018 19:24:19 UTC] PHP Warning:  Declaration of recommend::widget($instance) should be compatible with WP_Widget::widget($args, $instance) in /home/a80keneq/public_html/wp-content/themes/HotNewspro/includes/widget.php on line 69
[16-Nov-2018 19:24:19 UTC] PHP Warning:  Declaration of categories_s::widget($instance) should be compatible with WP_Widget::widget($args, $instance) in /home/a80keneq/public_html/wp-content/themes/HotNewspro/includes/widget.php on line 83
[16-Nov-2018 19:24:19 UTC] PHP Warning:  Declaration of rcategory::widget($instance) should be compatible with WP_Widget::widget($args, $instance) in /home/a80keneq/public_html/wp-content/themes/HotNewspro/includes/widget.php on line 97
[16-Nov-2018 19:24:19 UTC] PHP Warning:  Declaration of ads::widget($instance) should be compatible with WP_Widget::widget($args, $instance) in /home/a80keneq/public_html/wp-content/themes/HotNewspro/includes/widget.php on line 111
[16-Nov-2018 19:24:19 UTC] PHP Warning:  Declaration of tags::widget($instance) should be compatible with WP_Widget::widget($args, $instance) in /home/a80keneq/public_html/wp-content/themes/HotNewspro/includes/widget.php on line 125
[16-Nov-2018 19:24:19 UTC] PHP Warning:  Declaration of mimgs::widget($instance) should be compatible with WP_Widget::widget($args, $instance) in /home/a80keneq/public_html/wp-content/themes/HotNewspro/includes/widget.php on line 139
[16-Nov-2018 19:24:19 UTC] PHP Warning:  Declaration of search_g::widget($instance) should be compatible with WP_Widget::widget($args, $instance) in /home/a80keneq/public_html/wp-content/themes/HotNewspro/includes/widget.php on line 153
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