diff --git a/compiler/error/source/400_BAD_REQUEST.tsv b/compiler/error/source/400_BAD_REQUEST.tsv
index 3ef57b83..382e521e 100644
--- a/compiler/error/source/400_BAD_REQUEST.tsv
+++ b/compiler/error/source/400_BAD_REQUEST.tsv
@@ -67,4 +67,5 @@ USER_NOT_MUTUAL_CONTACT	The user is not a mutual contact
 USER_CHANNELS_TOO_MUCH	The user is already in too many channels or supergroups
 API_ID_PUBLISHED_FLOOD	You are using an API key that is limited on the server side
 USER_NOT_PARTICIPANT	The user is not a member of this chat
-CHANNEL_PRIVATE	The channel/supergroup is not accessible
\ No newline at end of file
+CHANNEL_PRIVATE	The channel/supergroup is not accessible
+MESSAGE_IDS_EMPTY	The requested message doesn't exist
\ No newline at end of file
diff --git a/docs/source/start/Installation.rst b/docs/source/start/Installation.rst
index e7b2eb3d..37fedbdf 100644
--- a/docs/source/start/Installation.rst
+++ b/docs/source/start/Installation.rst
@@ -82,7 +82,7 @@ If no error shows up you are good to go.
 
     >>> import pyrogram
     >>> pyrogram.__version__
-    '0.9.0'
+    '0.9.1'
 
 .. _TgCrypto: https://docs.pyrogram.ml/resources/TgCrypto
 .. _develop: http://github.com/pyrogram/pyrogram
diff --git a/pyrogram/__init__.py b/pyrogram/__init__.py
index 12bb85ca..9cbe21c9 100644
--- a/pyrogram/__init__.py
+++ b/pyrogram/__init__.py
@@ -31,7 +31,7 @@ __copyright__ = "Copyright (C) 2017-2018 Dan Tès <https://github.com/delivrance
     "e" if sys.getfilesystemencoding() != "utf-8" else "\xe8"
 )
 __license__ = "GNU Lesser General Public License v3 or later (LGPLv3+)"
-__version__ = "0.9.0.async1"
+__version__ = "0.9.1.async1"
 
 from .api.errors import Error
 from .client.types import (
diff --git a/pyrogram/client/ext/utils.py b/pyrogram/client/ext/utils.py
index 23396472..1f181bb3 100644
--- a/pyrogram/client/ext/utils.py
+++ b/pyrogram/client/ext/utils.py
@@ -19,16 +19,14 @@
 import asyncio
 import logging
 import sys
-import time
 from base64 import b64decode, b64encode
 from concurrent.futures.thread import ThreadPoolExecutor
 from struct import pack
 from weakref import proxy
 
-from pyrogram.api.errors import FloodWait
 from pyrogram.client import types as pyrogram_types
 from ...api import types, functions
-from ...api.errors import StickersetInvalid
+from ...api.errors import StickersetInvalid, MessageIdsEmpty
 
 log = logging.getLogger(__name__)
 
@@ -227,7 +225,7 @@ def parse_channel_chat(channel: types.Channel) -> pyrogram_types.Chat:
         title=channel.title,
         username=getattr(channel, "username", None),
         photo=parse_chat_photo(getattr(channel, "photo", None)),
-        restriction_reason=getattr(channel, "restriction_reason")
+        restriction_reason=getattr(channel, "restriction_reason", None)
     )
 
 
@@ -647,19 +645,14 @@ async def parse_messages(
                 m.caption.init(m._client, m.caption_entities or [])
 
             if message.reply_to_msg_id and replies:
-                while True:
-                    try:
-                        m.reply_to_message = await client.get_messages(
-                            m.chat.id,
-                            reply_to_message_ids=message.id,
-                            replies=replies - 1
-                        )
-                    except FloodWait as e:
-                        log.warning("get_messages flood: waiting {} seconds".format(e.x))
-                        time.sleep(e.x)
-                        continue
-                    else:
-                        break
+                try:
+                    m.reply_to_message = await client.get_messages(
+                        m.chat.id,
+                        reply_to_message_ids=message.id,
+                        replies=replies - 1
+                    )
+                except MessageIdsEmpty:
+                    m.reply_to_message = None
         elif isinstance(message, types.MessageService):
             action = message.action
 
@@ -760,19 +753,11 @@ async def parse_messages(
             )
 
             if isinstance(action, types.MessageActionPinMessage):
-                while True:
-                    try:
-                        m.pinned_message = await client.get_messages(
-                            m.chat.id,
-                            reply_to_message_ids=message.id,
-                            replies=0
-                        )
-                    except FloodWait as e:
-                        log.warning("get_messages flood: waiting {} seconds".format(e.x))
-                        time.sleep(e.x)
-                        continue
-                    else:
-                        break
+                m.pinned_message = await client.get_messages(
+                    m.chat.id,
+                    reply_to_message_ids=message.id,
+                    replies=0
+                )
         else:
             m = pyrogram_types.Message(message_id=message.id, client=proxy(client))
 
@@ -985,6 +970,7 @@ def parse_chat_members(members: types.channels.ChannelParticipants or types.mess
     parsed_members = []
 
     if isinstance(members, types.channels.ChannelParticipants):
+        count = members.count
         members = members.participants
 
         for member in members:
@@ -1043,7 +1029,7 @@ def parse_chat_members(members: types.channels.ChannelParticipants or types.mess
                 parsed_members.append(chat_member)
 
         return pyrogram_types.ChatMembers(
-            total_count=members.count,
+            total_count=count,
             chat_members=parsed_members
         )
     else:
diff --git a/pyrogram/client/types/bots/inline_keyboard_button.py b/pyrogram/client/types/bots/inline_keyboard_button.py
index 0f4779a9..3d6c7b6b 100644
--- a/pyrogram/client/types/bots/inline_keyboard_button.py
+++ b/pyrogram/client/types/bots/inline_keyboard_button.py
@@ -31,7 +31,7 @@ class InlineKeyboardButton(Object):
         text (``str``):
             Label text on the button.
 
-        callback_data (``str``, *optional*):
+        callback_data (``bytes``, *optional*):
             Data to be sent in a callback query to the bot when button is pressed, 1-64 bytes.
 
         url (``str``, *optional*):
@@ -59,7 +59,7 @@ class InlineKeyboardButton(Object):
     def __init__(
             self,
             text: str,
-            callback_data: str = None,
+            callback_data: bytes = None,
             url: str = None,
             switch_inline_query: str = None,
             switch_inline_query_current_chat: str = None,
@@ -85,7 +85,7 @@ class InlineKeyboardButton(Object):
         if isinstance(b, KeyboardButtonCallback):
             return InlineKeyboardButton(
                 text=b.text,
-                callback_data=b.data.decode()
+                callback_data=b.data
             )
 
         if isinstance(b, KeyboardButtonSwitchInline):
@@ -102,7 +102,7 @@ class InlineKeyboardButton(Object):
 
     def write(self):
         if self.callback_data:
-            return KeyboardButtonCallback(self.text, self.callback_data.encode())
+            return KeyboardButtonCallback(self.text, self.callback_data)
 
         if self.url:
             return KeyboardButtonUrl(self.text, self.url)