[debug] add more debug logs

wrappers/fastapi_wrapper.py

@@ -133,9 +133,12 @@ if bool(write_tmp_on_disk):
     try:
         app.mount("/vis_output", StaticFiles(directory=write_tmp_on_disk), name="vis_output")
     except RuntimeError:
+        app_logger.info(f"missing folder write_tmp_on_disk:{write_tmp_on_disk}, try to remove if it's a file or symlink...")
         pathlib.Path.unlink(write_tmp_on_disk, missing_ok=True)
+        app_logger.info(f"try to create the folder write_tmp_on_disk:{write_tmp_on_disk}.")
         os.makedirs(write_tmp_on_disk, exist_ok=True)
         app.mount("/vis_output", StaticFiles(directory=write_tmp_on_disk), name="vis_output")
+        app_logger.info(f"mounted folder write_tmp_on_disk:{write_tmp_on_disk}.")
     templates = Jinja2Templates(directory=PROJECT_ROOT_FOLDER / "static")