diff --git a/gradle.properties b/gradle.properties
index 1d02577..1e4944c 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -5,7 +5,7 @@ MORNY_ARCHIVE_NAME = morny-coeur
 MORNY_CODE_STORE = https://github.com/Eyre-S/Coeur-Morny-Cono
 MORNY_COMMIT_PATH = https://github.com/Eyre-S/Coeur-Morny-Cono/commit/%s
 
-VERSION = 1.3.0-dev8
+VERSION = 1.3.0-dev9
 
 USE_DELTA = false
 VERSION_DELTA =
diff --git a/src/main/scala/cc/sukazyo/cono/morny/MornyCoeur.scala b/src/main/scala/cc/sukazyo/cono/morny/MornyCoeur.scala
index f88d9b4..3f3f2d4 100644
--- a/src/main/scala/cc/sukazyo/cono/morny/MornyCoeur.scala
+++ b/src/main/scala/cc/sukazyo/cono/morny/MornyCoeur.scala
@@ -99,6 +99,14 @@ class MornyCoeur (using val config: MornyConfig) {
 	import com.pengrad.telegrambot.TelegramException
 	account.setUpdatesListener(eventManager, (e: TelegramException) => {
 		
+		// This function intended to catch exceptions on update
+		//   fetching controlled by Telegram API Client. So that
+		//   it won't be directly printed to STDOUT without Morny's
+		//   logger. And it can be reported when needed.
+		// TelegramException can either contains a caused that infers
+		//   a lower level client exception (network err or others);
+		//   nor contains a response that means API request failed.
+		
 		if (e.response != null) {
 			import com.google.gson.GsonBuilder
 			logger error
@@ -106,6 +114,7 @@ class MornyCoeur (using val config: MornyConfig) {
 				   |  server responses:
 				   |${GsonBuilder().setPrettyPrinting().create.toJson(e.response) indent 4}
 				   |""".stripMargin
+			this.daemons.reporter.exception(e, "Failed get updates.")
 		}
 		
 		if (e.getCause != null) {
@@ -119,15 +128,17 @@ class MornyCoeur (using val config: MornyConfig) {
 					import scala.collection.mutable
 					val log = mutable.ArrayBuffer(s"Failed get updates: Network Error")
 					var current: Throwable = e_timeout
-					log += s"  due to: ${current.getMessage}"
+					log += s"  due to: ${current.getClass.getSimpleName}: ${current.getMessage}"
 					while (current.getCause != null) {
 						current = current.getCause
 						log += s"  caused by: ${current.getClass.getSimpleName}: ${current.getMessage}"
 					}
 					logger error Message(log mkString "\n")
 				case e_other =>
-					logger error exceptionLog(e_other)
-					this.daemons.reporter exception e_other
+					logger error
+						s"""Failed get updates:
+						   |${exceptionLog(e_other) indent 3}""".stripMargin
+					this.daemons.reporter.exception(e_other, "Failed get updates.")
 		}
 		
 	})
diff --git a/src/main/scala/cc/sukazyo/cono/morny/daemon/MornyReport.scala b/src/main/scala/cc/sukazyo/cono/morny/daemon/MornyReport.scala
index 307401a..2ede970 100644
--- a/src/main/scala/cc/sukazyo/cono/morny/daemon/MornyReport.scala
+++ b/src/main/scala/cc/sukazyo/cono/morny/daemon/MornyReport.scala
@@ -19,6 +19,7 @@ import com.pengrad.telegrambot.model.request.ParseMode
 import com.pengrad.telegrambot.model.User
 import com.pengrad.telegrambot.request.{BaseRequest, SendMessage}
 import com.pengrad.telegrambot.response.BaseResponse
+import com.pengrad.telegrambot.TelegramException
 
 import java.time.ZoneId
 
@@ -32,13 +33,20 @@ class MornyReport (using coeur: MornyCoeur) {
 		if !enabled then return;
 		try {
 			coeur.account exec report
-		} catch case e: EventRuntimeException.ActionFailed => {
-			logger warn
-					s"""cannot execute report to telegram:
-					   |${exceptionLog(e) indent 4}
-					   |  tg-api response:
-					   |${(e.response toString) indent 4}"""
-					.stripMargin
+		} catch case e: EventRuntimeException => {
+			import EventRuntimeException.*
+			e match
+				case e: ActionFailed =>
+					logger warn
+						s"""cannot execute report to telegram:
+						   |${exceptionLog(e) indent 4}
+						   |  tg-api response:
+						   |${(e.response toString) indent 4}""".stripMargin
+				case e: ClientFailed =>
+					logger error
+						s"""failed when report to telegram:
+						   |${exceptionLog(e.getCause) indent 4}
+						   |""".stripMargin
 		}
 	}
 	
@@ -48,6 +56,10 @@ class MornyReport (using coeur: MornyCoeur) {
 				// language=html
 				"\n\ntg-api error:\n<pre><code class='language-json'>%s</code></pre>"
 						.formatted(GsonBuilder().setPrettyPrinting().create.toJson(api.response))
+			case tgErr: TelegramException if tgErr.response != null =>
+				// language=html
+				"\n\ntg-api error:\n<pre><code class='language-json'>%s</code></pre>"
+					.formatted(GsonBuilder().setPrettyPrinting().create.toJson(tgErr.response))
 			case _ => ""
 		executeReport(SendMessage(
 			coeur.config.reportToChat,
diff --git a/src/main/scala/cc/sukazyo/cono/morny/util/tgapi/TelegramExtensions.scala b/src/main/scala/cc/sukazyo/cono/morny/util/tgapi/TelegramExtensions.scala
index 5e38eeb..f066792 100644
--- a/src/main/scala/cc/sukazyo/cono/morny/util/tgapi/TelegramExtensions.scala
+++ b/src/main/scala/cc/sukazyo/cono/morny/util/tgapi/TelegramExtensions.scala
@@ -12,13 +12,17 @@ object TelegramExtensions {
 	
 	object Bot { extension (bot: TelegramBot) {
 		
+		@throws[EventRuntimeException]
 		def exec [T <: BaseRequest[T, R], R <: BaseResponse] (request: T, onError_message: String = ""): R = {
-			val response = bot execute request
-			if response isOk then return response
-			throw EventRuntimeException.ActionFailed(
-				if onError_message isEmpty then response.errorCode toString else onError_message,
-				response
-			)
+			try {
+				val response = bot execute request
+				if response isOk then return response
+				throw EventRuntimeException.ActionFailed(
+					if onError_message isEmpty then response.errorCode toString else onError_message,
+					response
+				)
+			} catch case e: RuntimeException =>
+				throw EventRuntimeException.ClientFailed(e)
 		}
 		
 	}}
diff --git a/src/main/scala/cc/sukazyo/cono/morny/util/tgapi/event/EventRuntimeException.scala b/src/main/scala/cc/sukazyo/cono/morny/util/tgapi/event/EventRuntimeException.scala
index b44e7be..dfc3e86 100644
--- a/src/main/scala/cc/sukazyo/cono/morny/util/tgapi/event/EventRuntimeException.scala
+++ b/src/main/scala/cc/sukazyo/cono/morny/util/tgapi/event/EventRuntimeException.scala
@@ -2,8 +2,26 @@ package cc.sukazyo.cono.morny.util.tgapi.event
 
 import com.pengrad.telegrambot.response.BaseResponse
 
-class EventRuntimeException (message: String) extends RuntimeException(message)
+/** All possible exception when do Telegram Request.
+  *
+  * Contains following detailed exceptions:
+  *  - [[EventRuntimeException.ClientFailed]]
+  *  - [[EventRuntimeException.ActionFailed]]
+  */
+abstract class EventRuntimeException (message: String) extends RuntimeException(message)
 
 object EventRuntimeException {
+	/** Telegram API request failed due to the response code is not 200 OK.
+	  * @param response Raw API response object.
+	  */
 	class ActionFailed (message: String, val response: BaseResponse) extends EventRuntimeException(message)
+	/** Client exception occurred when sending request.
+	  *
+	  * It may be some network exception, or parsing API response exception.
+	  *
+	  * The client exception is stored in [[getCause]].
+	  */
+	class ClientFailed (caused: Exception) extends EventRuntimeException("API client failed.") {
+		this.initCause(caused)
+	}
 }