further fix for zerogpu

app.py

@@ -18,9 +18,19 @@ from generate import CHECKPOINTS, ROOT, generate_images, load_model
 ZERO_GPU = os.environ.get("SPACES_ZERO_GPU", "").lower() in {"1", "true", "yes"}
 def gpu_unavailable(error):
     """Recognize allocation/quota/CUDA failures without masking model errors."""
-    message = str(error).lower()
-    return any(text in message for text in (
-        "quota exceeded", "exceeded your gpu quota", "exceeded your zerogpu quota",
+    # Spaces puts the stable error category in gr.Error.title, while the
+    # message varies by authentication/subscription tier and quota type.
+    title = str(getattr(error, "title", "")).lower()
+    message = str(getattr(error, "message", str(error))).lower()
+    if title in {"zerogpu quota exceeded", "zerogpu pending credits exceeded"}:
+        return True
+    quota_failure = (
+        ("quota" in message and ("exceeded" in message or "exhausted" in message))
+        or "space app has reached its gpu limit" in message
+        or "exceeded your zerogpu runs limit" in message
+        or "too many zerogpu credits allocated" in message
+    )
+    return quota_failure or any(text in message for text in (
         "no gpu was available", "no gpu available", "cuda out of memory",
         "cuda is not available", "no nvidia driver", "not compiled with cuda",
         "cuda driver", "cuda-capable device", "gpu task aborted",