corrected server check

Author: mrsaicharan1

app/api/tickets.py

@@ -22,7 +22,7 @@
 
 
 def validate_ticket_price(data):
-    if not data.get('price') and data.get('type'):
+    if not data.get('price') or not data.get('type'):
         raise UnprocessableEntity({}, "Type/price of ticket is missing")
     if data.get('type') != 'free' and int(data.get('price')) <= 0:
         raise UnprocessableEntity(