From 92d370e67011ec532a07fd4fe85fd49bfa390b2a Mon Sep 17 00:00:00 2001
From: caufieldjh <j.harry.caufield@gmail.com>
Date: Tue, 19 Sep 2023 15:33:03 -0400
Subject: [PATCH] Fix type error in HALOEngine

---
 src/ontogpt/engines/halo_engine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ontogpt/engines/halo_engine.py b/src/ontogpt/engines/halo_engine.py
index 42c6220d0..d34d95167 100644
--- a/src/ontogpt/engines/halo_engine.py
+++ b/src/ontogpt/engines/halo_engine.py
@@ -63,7 +63,7 @@ class HALOEngine(KnowledgeEngine):
         default_factory=lambda: ["subtypes", "parts", "subclass_of", "part_of"]
     )
     fixed_slot_values: Optional[Dict[str, str]] = None
-    adapter: OboGraphInterface
+    adapter: OboGraphInterface = None
     visited: Set[ELEMENT_NAME] = field(default_factory=lambda: set())
     candidates: List[ELEMENT_NAME] = None
     always_extend: bool = False