App: fix paths.

app.py

@@ -7,9 +7,9 @@ os.environ["TORCH_COMPILE_DISABLE"] = "1"
 os.environ["TORCHDYNAMO_DISABLE"] = "1"
 
 # Place caches in persistent storage
-os.environ["HF_HOME"] = /data/.huggingface
-os.environ["HF_HUB_CACHE"] = /data/.cache/huggingface/hub
-os.environ["HF_DATASETS_CACHE"] = /data/.cache/huggingface/datasets
+os.environ["HF_HOME"] = "/data/.huggingface"
+os.environ["HF_HUB_CACHE"] = "/data/.cache/huggingface/hub"
+os.environ["HF_DATASETS_CACHE"] = "/data/.cache/huggingface/datasets"
 
 # Install xformers for memory-efficient attention
 subprocess.run([sys.executable, "-m", "pip", "install", "xformers==0.0.32.post2", "--no-build-isolation"], check=False)