Fix crash if Mega API key is not provided

Signed-off-by: lzzy12 <jhashivam2020@gmail.com>

bot/__init__.py

@@ -84,7 +84,7 @@ try:
     MEGA_API_KEY = getConfig('MEGA_API_KEY')
 except KeyError:
     logging.warning('MEGA API KEY not provided!')
-
+    MEGA_API_KEY = None
 try:
     MEGA_EMAIL_ID = getConfig('MEGA_EMAIL_ID')
     MEGA_PASSWORD = getConfig('MEGA_PASSWORD')

bot/helper/mirror_utils/download_utils/mega_downloader.py

@@ -121,7 +121,8 @@ class MegaDownloadHelper:
     def __init__(self):
         pass
 
-    def add_download(self, mega_link: str, path: str, listener):
+    @staticmethod
+    def add_download(mega_link: str, path: str, listener):
         if MEGA_API_KEY is None:
             raise MegaDownloaderException('Mega API KEY not provided! Cannot mirror mega links')
         executor = AsyncExecutor()