Fixed gantt chart query for Task
diff --git a/erpnext/projects/doctype/task/task.py b/erpnext/projects/doctype/task/task.py
index 7fbaa45..6b0b237 100644
--- a/erpnext/projects/doctype/task/task.py
+++ b/erpnext/projects/doctype/task/task.py
@@ -52,7 +52,7 @@
 		frappe.msgprint(_("No Permission"), raise_exception=1)
 
 	conditions = build_match_conditions("Task")
-	conditions and (" and " + conditions) or ""
+	conditions = conditions and (" and " + conditions) or ""
 
 	if filters:
 		filters = json.loads(filters)