fix

src/main/resources/mapper/StudentMapper.xml

@@ -671,7 +671,7 @@
                count(1) as         totalCount,
                sum(case
                        when stu.file_upload_status = 'UPLOADED' and stu.image_check_status = 'WAITING' then 1
-                       else 0 end) waitingCount
+                       else 0 end) waitingCount,
                sum(case
                        when stu.file_upload_status = 'UPLOADED' and stu.image_check_status = 'FAILED' then 1
                        else 0 end) failedCount