diff --git a/controller.py b/controller.py
index 37d4dc6..66c5ada 100644
--- a/controller.py
+++ b/controller.py
@@ -628,6 +628,7 @@ def calc_tensors(project_id: str, embedding_id: str, texts: List[str]) -> List[A
         return None
     if len(texts) == 0:
         return []
+    embedder = None
     try:
         embedder = __setup_tmp_embedder(project_id, embedding_id)
         return embedder.transform(texts)
diff --git a/submodules/model b/submodules/model
index bf76a4d..8e59d8e 160000
--- a/submodules/model
+++ b/submodules/model
@@ -1 +1 @@
-Subproject commit bf76a4daec06a56b267b958df6da6b6e49564ed2
+Subproject commit 8e59d8ef75b0ade84d1ef4d0b7e957eb324c2bc8