Update main.py

main.py

@@ -38,7 +38,7 @@ async def lifespan(app: FastAPI):
     os.environ["LANGCHAIN_API_KEY"] = os.getenv("LANGCHAIN_API_KEY")
     ## load the Groq API key
     os.environ['GROQ_API_KEY'] = os.getenv("GROQ_API_KEY")
-    os.environ['HF_TOKEN'] - os.getenv("HF_TOKEN")
+    os.environ['HF_TOKEN'] = os.getenv("HF_TOKEN")
     global image_to_text
     image_to_text = pipeline("image-to-text", model="Salesforce/blip-image-captioning-large")
     yield