diff --git a/img/thumb.jpg b/img/thumb.jpg
new file mode 100644
index 00000000..d1087b27
Binary files /dev/null and b/img/thumb.jpg differ
diff --git a/misskaty/plugins/bypass.py b/misskaty/plugins/bypass.py
index 23580628..955da782 100644
--- a/misskaty/plugins/bypass.py
+++ b/misskaty/plugins/bypass.py
@@ -113,6 +113,8 @@ async def bypass(_, message):
                 reply_markup=markup,
                 disable_web_page_preview=True,
             )
-    else:
+    elif "we.tl" or "wetransfer.com" in url:
         data = wetransfer_bypass(url)
         await msg.edit(f"{data}\n\n{mention}")
+    else:
+        await msg.edit("Unsupported URL..")
\ No newline at end of file
diff --git a/misskaty/plugins/dev.py b/misskaty/plugins/dev.py
index 3dcc8896..fa92be5e 100644
--- a/misskaty/plugins/dev.py
+++ b/misskaty/plugins/dev.py
@@ -139,6 +139,7 @@ async def evaluation_cmd_t(_, m):
             document="MissKatyEval.txt",
             caption=f"<code>{cmd[: 4096 // 4 - 1]}</code>",
             disable_notification=True,
+            thumb="img/thumb.jpg",
             reply_markup=InlineKeyboardMarkup([[InlineKeyboardButton(text="❌ Close", callback_data=f"close#{m.from_user.id}")]]),
         )
         os.remove("MissKatyEval.txt")
diff --git a/misskaty/plugins/download_upload.py b/misskaty/plugins/download_upload.py
index 5ecc5909..cf3295d5 100644
--- a/misskaty/plugins/download_upload.py
+++ b/misskaty/plugins/download_upload.py
@@ -54,7 +54,7 @@ async def upload(bot, message):
         await m.edit(output, reply_markup=btn)
     except Exception as e:
         await bot.send_message(message.chat.id, text=f"Something Went Wrong!\n\n{e}")
-    os.remove(sed)
+    os.remove(fileku)
 
 
 @app.on_message(filters.command(["download"], COMMAND_HANDLER) & filters.user(SUDO))
diff --git a/misskaty/plugins/json.py b/misskaty/plugins/json.py
index ae4dd081..4c010973 100644
--- a/misskaty/plugins/json.py
+++ b/misskaty/plugins/json.py
@@ -44,6 +44,7 @@ async def jsonify(_, message):
             caption=f"<code>{str(e)}</code>",
             disable_notification=True,
             reply_to_message_id=reply_to_id,
+            thumb="img/thumb.jpg",
             reply_markup=InlineKeyboardMarkup(
                 [
                     [
diff --git a/misskaty/plugins/mediainfo.py b/misskaty/plugins/mediainfo.py
index f9a11385..96aa57af 100644
--- a/misskaty/plugins/mediainfo.py
+++ b/misskaty/plugins/mediainfo.py
@@ -86,6 +86,7 @@ async def mediainfo(client, message):
                 await message.reply_document(
                     out_file,
                     caption=f"Hasil mediainfo anda..\n\n**Request by:** {message.from_user.mention}",
+                    thumb="img/thumb.jpg",
                     reply_markup=markup,
                 )
                 await process.delete()
diff --git a/misskaty/plugins/paste.py b/misskaty/plugins/paste.py
index 271a709e..ee0198eb 100644
--- a/misskaty/plugins/paste.py
+++ b/misskaty/plugins/paste.py
@@ -26,7 +26,7 @@ __HELP__ = """
 # Size Checker for Limit
 def humanbytes(size: int):
     """Convert Bytes To Bytes So That Human Can Read It"""
-    if not isinstance(command, int):
+    if not isinstance(size, int):
         try:
             size = size
         except ValueError:
diff --git a/misskaty/plugins/sub_extractor.py b/misskaty/plugins/sub_extractor.py
index 0087cba4..6fd3887f 100644
--- a/misskaty/plugins/sub_extractor.py
+++ b/misskaty/plugins/sub_extractor.py
@@ -120,6 +120,7 @@ async def convertsrt(c, m):
     await m.reply_document(
         f"{filename}.srt",
         caption=f"<code>{filename}.srt</code>\n\nConverted by @{c.me.username}",
+        thumb="img/thumb.jpg",
         progress=progress_for_pyrogram,
         progress_args=("Uploading files..", msg, c_time),
     )
@@ -163,6 +164,7 @@ async def stream_extract(bot, update):
             namafile,
             caption=f"<b>Filename:</b> <code>{namafile}</code>\n\nExtracted by @{bot.me.username} in {timelog}",
             reply_to_message_id=usr.id,
+            thumb="img/thumb.jpg",
             progress=progress_for_pyrogram,
             progress_args=("Uploading files..", update.message, c_time),
         )