fix 500 error

files/classes/sub.py

@@ -2,9 +2,13 @@ from sqlalchemy import *
 from sqlalchemy.orm import relationship
 from files.__main__ import Base
 from files.helpers.lazy import lazy
-from files.helpers.const import *
+from os import environ
 from .sub_block import *
 
+SITE_NAME = environ.get("SITE_NAME", '').strip()
+SITE = environ.get("DOMAIN", '').strip()
+if SITE == "localhost": SITE_FULL = 'http://' + SITE
+else: SITE_FULL = 'https://' + SITE
 
 class Sub(Base):
 	__tablename__ = "subs"