fix logging

app.py

@@ -12,18 +12,20 @@ DATASET_REPO_URL = "https://huggingface.co/datasets/optimum/exporters"
 DATA_FILENAME = "data.csv"
 DATA_FILE = os.path.join("data", DATA_FILENAME)
 
-HF_TOKEN = os.environ.get("HF_TOKEN")
+HF_TOKEN = os.environ.get("HF_PRIVATE_TOKEN")
+
+DATADIR = "exporters_data"
 
 repo: Optional[Repository] = None
 if HF_TOKEN:
-    repo = Repository(local_dir="data", clone_from=DATASET_REPO_URL, token=HF_TOKEN)
+    repo = Repository(local_dir=DATADIR, clone_from=DATASET_REPO_URL, token=HF_TOKEN)
 
 def onnx_export(token: str, model_id: str, task: str) -> str:
     if token == "" or model_id == "":
         return """
         ### Invalid input 🐞
 
-        Please fill a token and model_id.
+        Please fill a token and model name.
         """
     try:
         api = HfApi(token=token)
@@ -37,7 +39,7 @@ def onnx_export(token: str, model_id: str, task: str) -> str:
         # save in a private dataset
         if repo is not None:
             repo.git_pull(rebase=True)
-            with open(DATA_FILE, "a") as csvfile:
+            with open(os.path.join(DATADIR, DATA_FILE), "a") as csvfile:
                 writer = csv.DictWriter(
                     csvfile, fieldnames=["model_id", "pr_url", "time"]
                 )