Issue I am facing

I am facing issue when trying to set permission for send poll to True
chat.set_permissions(permission=ChatPermissions(can_send_polls=True))
Then send media, send stickers and gifs, and embed links are turned off.
Because it should not, so i am going to check current permission and replace to new permission and set new one.
And now i am stuck at ChatPermission, since it wasn't dict. So i can't merge or append at ChatPermission.

Traceback to the issue

chat.set_permissions(permission=ChatPermissions(can_send_polls=True))

changed default permissions

+Send polls
−Send media
−Send stickers & GIFs
−Embed links

Related part of your code

current = context.bot.getChat(chat_id).permissions
new = {'can_send_polls': True}

permissions = {'can_send_messages': None, 'can_send_media_messages': None, 'can_send_polls': None, 'can_send_other_messages': None, 'can_add_web_page_previews': None, 'can_change_info': None, 'can_invite_users': None, 'can_pin_messages': None}
permissions.update(current)
permissions.update(new)
# ???

doing chat.set_permissions(permission=permissions) will got error since set_permissions is converting to_dict() at