datax的job.json配置多个job 出现WARN ConfigParser - 插件[n

WARN ConfigParser - 插件[null,null]加载失败，1s后重试... Exception:Code:[Framework-12], Description:[DataX插件初始化错误, 该问题通常是由于DataX安装错误引起，请联系您的运维解决 .]. - 插件加载失败，未完成指定
插件加载:[null]
2023-09-11 13:18:02.605 [main] ERROR Engine -

经DataX智能分析,该任务最可能的错误原因是:
com.alibaba.datax.common.exception.DataXException: Code:[Framework-12], Description:[DataX插件初始化错误, 该问题通常是由于DataX安装错误引起，请联系您的运维解决 .]. - 插件加载失败，未完成指定插件加载:[null]
at com.alibaba.datax.common.exception.DataXException.asDataXException(DataXException.java:30)
at com.alibaba.datax.core.util.ConfigParser.parsePluginConfig(ConfigParser.java:142)
at com.alibaba.datax.core.util.ConfigParser.parse(ConfigParser.java:63)
at com.alibaba.datax.core.Engine.entry(Engine.java:131)
at com.alibaba.datax.core.Engine.main(Engine.java:201)

下面是文件
{
"job": {
"setting": {
"speed": {
"channel": 3
}
},
"content": [
{
"reader": {
"name": "mysqlreader",
"parameter": {
"username": "root",
"password": "root",
"connection": [
{
"querySql": [
"select from table1;"
],
"jdbcUrl": ["jdbc:mysql://localhost:3306/db1"]
}
]
}
},
"writer": {
"name": "mysqlwriter",
"parameter": {
"username": "root",
"password": "root",
"writeMode": "update",
"column": [""],
"connection": [
{
"table": ["table1"],
"jdbcUrl": "jdbc:mysql://localhost:3306/db2"
}
]
}
}
},
{
"reader": {
"name": "mysqlreader",
"parameter": {
"username": "root",
"password": "root",
"connection": [
{
"querySql": [
"select from table2;"
],
"jdbcUrl": ["jdbc:mysql://localhost:3306/db1"]
}
]
}
},
"writer": {
"name": "mysqlwriter",
"parameter": {
"username": "root",
"password": "root",
"writeMode": "update",
"column": [""],
"connection": [
{
"table": ["table2"],
"jdbcUrl": "jdbc:mysql://localhost:3306/db2"
}
]
}
}
}
]
}
}