diff --git a/src/dcef/backend/fastapi/prod.py b/src/dcef/backend/fastapi/prod.py
index fa3690c..e148ffb 100644
--- a/src/dcef/backend/fastapi/prod.py
+++ b/src/dcef/backend/fastapi/prod.py
@@ -4,4 +4,4 @@ import multiprocessing
 
 if __name__ == "__main__":
 	multiprocessing.freeze_support()  # for windows https://stackoverflow.com/a/67590514
-	uvicorn.run("src.main:app", host="0.0.0.0", port=58000, reload=False, workers=4)
\ No newline at end of file
+	uvicorn.run("src.main:app", host="0.0.0.0", port=58000, reload=False, workers=1, loop="asyncio")
\ No newline at end of file
diff --git a/src/dcef/backend/preprocess/JsonProcessor.py b/src/dcef/backend/preprocess/JsonProcessor.py
index 7899ca3..4732f78 100644
--- a/src/dcef/backend/preprocess/JsonProcessor.py
+++ b/src/dcef/backend/preprocess/JsonProcessor.py
@@ -404,7 +404,11 @@ class JsonProcessor:
 		json_path_with_base_dir = self.file_finder.add_base_directory(json_path)
 
 		# get file size
-		file_size = os.path.getsize(json_path_with_base_dir)
+		try:
+			file_size = os.path.getsize(json_path_with_base_dir)
+		except FileNotFoundError:
+			print(f'    ERROR: FileNotFoundError - path is probably longer than 260 chars')
+			file_size = 0
 
 		# get date modified
 		date_modified = os.path.getmtime(json_path_with_base_dir)
diff --git a/src/dcef/backend/preprocess/__init__.py b/src/dcef/backend/preprocess/__init__.py
deleted file mode 100644
index e69de29..0000000