[BUG]The following has evaluated to null or missing解决方案
2023-10-15 00:55:15
报错问题：The following has evaluated to null or missing: ==> secondNode.teachplanMedia [in template “course_template.ftl” at line 183, column 148] 从图可看出，teachplanMedia可能为空，所以报错。所以我们需要加入判断语句 OK 大功告成！！！
