ban nickname check update

app.py

@@ -199,7 +199,8 @@ async def on_member_ban(guild, banned_user):
             embed.set_author(name=f"{entry2.target}    ID: {entry2.target.id}", icon_url=entry2.target.avatar.url if entry2.target.avatar else bot.user.avatar.url)
             embed.title = "User Banned"
             embed.add_field(name="User", value=entry2.target.mention, inline=True)
-            embed.add_field(name="Nickname", value=entry2.target.nick, inline=True)
+            nickname = entry2.target.nick if entry2.target.nick else "None"
+            embed.add_field(name="Nickname", value=nicknmae, inline=True)
             embed.add_field(name="Account Created At", value=entry2.target.created_at, inline=True)
             embed.add_field(name="Moderator", value=entry2.user.mention, inline=True)
             embed.add_field(name="Nickname", value=entry2.user.nick, inline=True)