A very low-level error when writing code. At that time, I didn’t carefully look at the method I wrote. As a result, the constructor wrote more permission modifiers. The record is as follows:

private final ExecutionEnvironment env;
    private final String jobId;
    private final CalJobParam.JdbcParam dataSink;
	
	public public IndicatorParamFunction(ExecutionEnvironment env, String jobId, CalJobParam.JdbcParam dataSink) {
		this.env = env;
		this.jobId = jobId;
		this.dataSink = dataSink;
	}

More public………….. zero