diff --git a/build.sbt b/build.sbt
index 291efe766..f045fe04a 100644
--- a/build.sbt
+++ b/build.sbt
@@ -50,18 +50,20 @@ lazy val testScalastyle = taskKey[Unit]("testScalastyle")
 // - "shaded.@0" means prepend "shaded." to the original package name
 // - .inAll applies the rule to all dependencies, not just direct dependencies
 val packagesToShade = Seq(
-  "com.amazonaws.**",
-  "com.fasterxml.jackson.**",
+  "com.amazonaws.cloudwatch.**",
+  "com.fasterxml.jackson.core.**",
+  "com.fasterxml.jackson.dataformat.**",
+  "com.fasterxml.jackson.databind.**",
   "com.sun.jna.**",
   "com.thoughtworks.paranamer.**",
   "javax.annotation.**",
-  "org.antlr.v4.**",
-  "org.apache.**",
+  "org.apache.commons.codec.**",
+  "org.apache.commons.logging.**",
+  "org.apache.hc.**",
+  "org.apache.http.**",
   "org.glassfish.json.**",
   "org.joda.time.**",
-  "org.json4s.**",
   "org.reactivestreams.**",
-  "org.slf4j.**",
   "org.yaml.**",
   "software.amazon.**"
 )
diff --git a/spark-sql-application/src/main/scala/org/apache/spark/sql/FlintJobExecutor.scala b/spark-sql-application/src/main/scala/org/apache/spark/sql/FlintJobExecutor.scala
index c076f9974..8e037a53e 100644
--- a/spark-sql-application/src/main/scala/org/apache/spark/sql/FlintJobExecutor.scala
+++ b/spark-sql-application/src/main/scala/org/apache/spark/sql/FlintJobExecutor.scala
@@ -10,7 +10,6 @@ import java.util.Locale
 import com.amazonaws.services.glue.model.{AccessDeniedException, AWSGlueException}
 import com.amazonaws.services.s3.model.AmazonS3Exception
 import com.fasterxml.jackson.databind.ObjectMapper
-import com.fasterxml.jackson.module.scala.DefaultScalaModule
 import org.apache.commons.text.StringEscapeUtils.unescapeJava
 import org.opensearch.common.Strings
 import org.opensearch.flint.core.IRestHighLevelClient
@@ -45,7 +44,6 @@ trait FlintJobExecutor {
   this: Logging =>
 
   val mapper = new ObjectMapper()
-  mapper.registerModule(DefaultScalaModule)
 
   var currentTimeProvider: TimeProvider = new RealTimeProvider()
   var threadPoolFactory: ThreadPoolFactory = new DefaultThreadPoolFactory()
@@ -442,9 +440,10 @@ trait FlintJobExecutor {
       errorSource: Option[String] = None,
       statusCode: Option[Int] = None): String = {
     val errorMessage = s"$messagePrefix: ${e.getMessage}"
-    val errorDetails = Map("Message" -> errorMessage) ++
-      errorSource.map("ErrorSource" -> _) ++
-      statusCode.map(code => "StatusCode" -> code.toString)
+    val errorDetails = new java.util.LinkedHashMap[String, String]()
+    errorDetails.put("Message", errorMessage)
+    errorSource.foreach(es => errorDetails.put("ErrorSource", es))
+    statusCode.foreach(code => errorDetails.put("StatusCode", code.toString))
 
     val errorJson = mapper.writeValueAsString(errorDetails)