intellij scala: Error: Could not find or load main class - scala

Question

i have a R&D project that read data from oracle then write to spark standalone cluster by using scala & intellij
this is my build.sbt with library Dependencies
name := "DB_Oracle_V07"
version := "0.1"
scalaVersion := "2.11.12"
// https://mvnrepository.com/artifact/org.apache.spark/spark-core
libraryDependencies += "org.apache.spark" %% "spark-core" % "2.2.0"
// https://mvnrepository.com/artifact/org.apache.spark/spark-sql
libraryDependencies += "org.apache.spark" %% "spark-sql" % "2.4.0"
// https://mvnrepository.com/artifact/org.apache.spark/spark-hive
libraryDependencies += "org.apache.spark" %% "spark-hive" % "2.4.0"
my project main class without any spark syntax
package com.xxxx.spark
import java.io.FileWriter
import java.sql.{Connection, DriverManager}
import java.text.SimpleDateFormat
import java.util.Calendar
import scala.collection.mutable.ArrayBuffer
object query01 {
var dateStart = ""
case class DF_LOT_INFO(LOT_NUMBER: String, MACHINE: String, FACILITY: String, LOT_TYPE: String, REC_DATE: String, FILE_NAME: String)
def main(args:Array[String]): Unit = {
val cal = Calendar.getInstance
cal.add(Calendar.DATE, 1)
val date = cal.getTime
val format1 = new SimpleDateFormat("yyyyMMdd_HHmmss")
dateStart = format1.format(date)
print_log("start")
val url = "jdbc:oracle:thin:#TMDT1PEN.XXXX.XXXX.COM:1521:TMDT1"
//val driver = "oracle.jdbc.OracleDriver"
val driver = "oracle.jdbc.driver.OracleDriver"
val username = "TMDB_XXXX"
val password = "XXXXXXXX"
val connection:Connection = null
val result = ArrayBuffer[String]()
try{
print_log("Class.forName start")
val app_dir = System.getProperty("user.dir")
print_log("current dir: " + app_dir)
val java_class_path = System.getProperty("java.class.path")
print_log("java_class_path: " + java_class_path)
Class.forName(driver)
var testing = Class.forName(driver)
print_log("Class.forName end")
//DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver)
val connection = DriverManager.getConnection(url, username, password)
val statement = connection.createStatement
val rs = statement.executeQuery("select * from tester")
var i = 1
while(rs.next){
val item = rs.getString("tester_name")
println("data:" + item)
print_log("data:" + item)
result.append(item)
i = i + 1
}
values('aaaaa','bbbbb',sysdate)")
}
catch{
//case unknown => println("Got this unknown exception: " + unknown)
case unknown => print_error_log("Unknown exception: " + unknown)
}
finally{
}
print_log("end")
}
def print_log(msg:String): Unit = {
val fw = new FileWriter(dateStart + "_log.txt", true)
try {
fw.write("\n" + msg)
}
finally fw.close()
}
def print_error_log(msg:String): Unit = {
val fw = new FileWriter(dateStart + "_error_log.txt", true)
try {
fw.write("\n" + msg)
}
finally fw.close()
}
}
i build artifact as usual & added ojdbc6.jar in my proect .jar as my oracle library
ojdbc6.jar
but i fail to execute my project jar file and getting below error
Error: Could not find or load main class com.xxxx.spark.query01
blindly i removed all spark extracted jar files in my project .jar
or create a new project without any library Dependencies in build.sbt,
then i able to execute my project .jar without error.
With above blind test i sure that the error is caused by spark library,
Any expert can advise me how to solve this error? Thanks for all :)