安卓连接mysql数据库报错：Syntax error in regexp pattern

package com.example.money

import android.content.Intent
import android.os.Bundle
import android.util.Log
import android.view.View
import android.view.WindowManager
import android.widget.Button
import android.widget.EditText
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import java.sql.Connection
import java.sql.DriverManager
import java.sql.SQLException

class LoginActivity : AppCompatActivity()  {
    var login2: Button? =null
    var zhuce: Button?=null
    var phone: EditText?=null
    var pwd: EditText?=null
//    var conn: Connection? = null//一个成员变量


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_login)
        //设置全屏
        getWindow().setFlags(
            WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN
        );
        //隐藏顶部标题栏
        getSupportActionBar()?.hide()
        //获取控件
        getviews();
//        login2?.setOnClickListener(this);

        login2?.setOnClickListener {
            val phone = phone?.text.toString().trim()
            val pwd = pwd?.text.toString()
            //判断用户名和密码是否正确
//            if (phone.equals("18089500801") && pwd.equals("123456")) {
//                val intent = Intent(this, UserActivity::class.java)
//                startActivity(intent)
//            } else {
//                Toast.makeText(this, "用户名或密码错误", Toast.LENGTH_LONG).show()
//            }
            Thread(Runnable {
                val sql = "SELECT * FROM moneyusers"
                mysqlConnection(sql)
            }).start()
        }
        zhuce?.setOnClickListener{
            val intent = Intent(this@LoginActivity, ZhuCeActivity::class.java)
            startActivity(intent)
        }
}
    fun getviews(){
        login2 = findViewById(R.id.login2)
        zhuce = findViewById(R.id.zhuce)
        phone = findViewById(R.id.phone)
        pwd = findViewById(R.id.pwd)
    }


     //连接数据库
    fun mysqlConnection(sql:String) {
        var cn: Connection
        try {
            //加载驱动
            Class.forName("com.mysql.jdbc.Driver")
            //建立连接
            cn = DriverManager.getConnection("jdbc:mysql://192.168.43.73:3306/mydb","root","143226");
            val ps = cn.createStatement()
            val resultSet = ps!!.executeQuery(sql)
            while (resultSet.next()) {
                Log.d("mysqlConnection: " , resultSet.getString("id") +
                        resultSet.getString("phone") +
                        resultSet.getString("email")+resultSet.getString("pwd"))
            }
            if (ps != null) {
                ps!!.close()
            }
            if (cn != null) {
                cn.close()
            }
        } catch (e: ClassNotFoundException) {
            e.printStackTrace()
        } catch (e: SQLException) {
            e.printStackTrace()
        }

    }

//    override fun onClick(v: View?) {
//        if (v!!.id == R.id.login2) {
//
//        }
//    }


}

正则表达式语法错误，检查是否书写不合规范