我在第130行的“尝试获取非对象的属性”的快捷码中出错

以下是代码：

while ( $our_work->have_posts() ) { $our_work->the_post();

        $termsArray = get_the_terms( $post->ID, "filter" );  //This is the line I\'m getting error. which is line no 130.

        $termsString = ""; //initialize the string that will contain the terms

        foreach ( $termsArray as $term ) { // for each term 
            $termsString .= $term->slug.\' \'; //create a string that has all the slugs 
        }

        ........(content is here)
}
wp_reset_postdata();

过滤器是自定义分类法。我正在使用同位素jquery插件，该插件在页面中运行良好，但在短代码中出现了这个错误。我不知道为什么这是给错误。请帮忙。谢谢