fix save file

server.py

@@ -1,3 +1,4 @@
+import pathlib
 from typing import Union, Annotated
 import uvicorn
 from routes.user_routes import user_route
@@ -78,12 +79,15 @@ async def create_upload_file(file: UploadFile | None, package: Annotated[str, Fo
             os.makedirs(dir_last)
         if not os.path.exists(dir_stable):
             os.makedirs(dir_stable)
-        with open(f"{dir_file}/{filename}", 'w') as f:
+        os.remove(f"{dir_file}/{filename}")
+        with open(f"{dir_file}/{filename}", 'a') as f:
             f.write(str(contents))
-        with open(f"{dir_last}/{filename}", 'w') as f:
+        os.remove(f"{dir_last}/{filename}")
+        with open(f"{dir_last}/{filename}", 'a') as f:
             f.write(str(contents))
         if stable:
-            with open(f"{dir_stable}/{filename}", 'w') as f:
+            os.remove(f"{dir_stable}/{filename}")
+            with open(f"{dir_stable}/{filename}", 'a') as f:
                 f.write(str(contents))
     except Exception as err:
         return {"message": "There was an error uploading the file, error {err}".format(err=err)}