PHP文件：

URL地址：搜索页面

2019-11-13 16:39:26 --> mysqli_sql_exception
文件: D:\phpstudy_pro\WWW\www.****.com\dayrui\System\Database\MySQLi\Connection.php
行号: 330
错误: Invalid JSON text in argument 1 to function json_extract: "The document is empty." at position 0.
{"html":"<pre><code><span class=\"line\"><span class=\"number\">323<\/span>             <\/span><span style=\"color: #c7c7c7\">$this<\/span><span style=\"color: #f1ce61;\">-><\/span><span style=\"color: #c7c7c7\">connID<\/span><span style=\"color: #f1ce61;\">-><\/span><span style=\"color: #c7c7c7\">next_result<\/span><span style=\"color: #f1ce61;\">();\n<span class=\"line\"><span class=\"number\">324<\/span>             if (<\/span><span style=\"color: #c7c7c7\">$res <\/span><span style=\"color: #f1ce61;\">= <\/span><span style=\"color: #c7c7c7\">$this<\/span><span style=\"color: #f1ce61;\">-><\/span><span style=\"color: #c7c7c7\">connID<\/span><span style=\"color: #f1ce61;\">-><\/span><span style=\"color: #c7c7c7\">store_result<\/span><span style=\"color: #f1ce61;\">())\n<span class=\"line\"><span class=\"number\">325<\/span>             {\n<span class=\"line\"><span class=\"number\">326<\/span>                 <\/span><span style=\"color: #c7c7c7\">$res<\/span><span style=\"color: #f1ce61;\">-><\/span><span style=\"color: #c7c7c7\">free<\/span><span style=\"color: #f1ce61;\">();\n<span class=\"line\"><span class=\"number\">327<\/span>             }\n<span class=\"line\"><span class=\"number\">328<\/span>         }\n<span class=\"line\"><span class=\"number\">329<\/span> \n<span class='line highlight'><span class='number'>330<\/span>         return $this->connID->query($this->prepQuery($sql));\n<\/span><\/span><span style=\"color: #c7c7c7\"><\/span><span style=\"color: #f1ce61;\"><\/span><span style=\"color: #c7c7c7\"><\/span><span style=\"color: #f1ce61;\"><\/span><span style=\"color: #c7c7c7\"><\/span><span style=\"color: #f1ce61;\"><\/span><span style=\"color: #c7c7c7\"><\/span><span style=\"color: #f1ce61;\"><\/span><span style=\"color: #c7c7c7\"><\/span><span style=\"color: #f1ce61;\"><\/span><span style=\"color: #c7c7c7\"><\/span><span style=\"color: #f1ce61;\"><span class=\"line\"><span class=\"number\">331<\/span>     }\n<span class=\"line\"><span class=\"number\">332<\/span> \n<span class=\"line\"><span class=\"number\">333<\/span>     <\/span><span style=\"color: #767a7e; font-style: italic\">\/\/--------------------------------------------------------------------\n<span class=\"line\"><span class=\"number\">334<\/span> \n<span class=\"line\"><span class=\"number\">335<\/span>     \/**\n<span class=\"line\"><span class=\"number\">336<\/span>      * Prep the query\n<span class=\"line\"><span class=\"number\">337<\/span>      *\n<\/span><\/code><\/pre>"}
查询: SELECT `dr_1_news`.`id` FROM `dr_1_news` WHERE (`dr_1_news`.`catid` = 6 OR `dr_1_news`.`catids` LIKE "%\"6\"%") AND ( JSON_CONTAINS (`dr_1_news`.`types`->'$[*]', '"3"', '$')) ORDER BY NULL LIMIT 50000
地址: http://www.****.com/search/catid-6-types-3.html
来源: http://www.****.com/jiaodiantu/

好像复选的筛选条件，跟副栏目有冲突，有一条内容设置过副栏目之后，点复选字段 `types` ，就出现系统故障了