fix(mustjoin): make must_join configurable to prevent crash

DragMusic/plugins/bot/mustjoin.py

@@ -2,10 +2,10 @@ from pyrogram import Client, filters
 from pyrogram.types import InlineKeyboardMarkup, InlineKeyboardButton, Message
 from pyrogram.errors import ChatAdminRequired, UserNotParticipant, ChatWriteForbidden
 from DragMusic import app
+from config import MUST_JOIN
 
 #--------------------------
 
-MUST_JOIN = "ERROR_RESPON_TIMEOUT"
 #------------------------
 @app.on_message(filters.incoming & filters.private, group=-1)
 async def must_join_channel(app: Client, msg: Message):

config.py

@@ -16,6 +16,8 @@ BOT_TOKEN = getenv("BOT_TOKEN")
 # Get your mongo url from cloud.mongodb.com
 MONGO_DB_URI = getenv("MONGO_DB_URI")
 
+MUST_JOIN = getenv("MUST_JOIN", None)
+
 DURATION_LIMIT_MIN = int(getenv("DURATION_LIMIT", 200))
 
 SERVER_PLAYLIST_LIMIT = 300  # Set your desired limit here