Update main.py

main.py

@@ -775,7 +775,8 @@ app.include_router(document_generator_router_v2, prefix="/api/v2")
 from document_generator_v3 import router as document_generator_router_v3
 app.include_router(document_generator_router_v3, prefix="/api/v3")
 
-
+from document_generator_v4 import router as document_generator_router_v4
+app.include_router(document_generator_router_v4, prefix="/api/v4")
 
 from fastapi.middleware.cors import CORSMiddleware