Help! I’m a beginner on Kaggle. I’ve already written my code, and according to the competition requirements I saved a parquet file at the end. But every time I submit, it shows:
\n“Notebook Inference Server Never Started
\nYour submission notebook may not have started the inference server that is called to obtain predictions. This could mean you forgot to start it, or the notebook crashed. See more debugging tips.”
But I clearly already have an Output file and my notebook runs within the time limits.
\nhttps://www.kaggle.com/code/yichi02/cmi-v2
", "messages": [ { "id": 3271211, "postDate": "2025-08-18T10:20:11.983Z", "content": "Help! I’m a beginner on Kaggle. I’ve already written my code, and according to the competition requirements I saved a parquet file at the end. But every time I submit, it shows:
\n“Notebook Inference Server Never Started
\nYour submission notebook may not have started the inference server that is called to obtain predictions. This could mean you forgot to start it, or the notebook crashed. See more debugging tips.”
But I clearly already have an Output file and my notebook runs within the time limits.
\nhttps://www.kaggle.com/code/yichi02/cmi-v2
", "rawMarkdown": "Help! I’m a beginner on Kaggle. I’ve already written my code, and according to the competition requirements I saved a parquet file at the end. But every time I submit, it shows:\n\n“Notebook Inference Server Never Started\nYour submission notebook may not have started the inference server that is called to obtain predictions. This could mean you forgot to start it, or the notebook crashed. See more debugging tips.”\n\nBut I clearly already have an Output file and my notebook runs within the time limits.\n\nhttps://www.kaggle.com/code/yichi02/cmi-v2\n\n", "votes": 1 }, { "id": 3271501, "postDate": "2025-08-19T03:26:42.457Z", "content": "in this competition you can't just save a prediction file and send it, the test file you see in your code is a fake file with 2 sequences only, there is an api provided by kaggle that you need to call and when you submit the code and that api will replace the test file with the actual one in the predict function where it process one sample at a time
\nIt is hard to explain if you are very new to this, but you can check any public code in this competition that is very simple and look at how the predictions are submitted at the end
", "rawMarkdown": "in this competition you can't just save a prediction file and send it, the test file you see in your code is a fake file with 2 sequences only, there is an api provided by kaggle that you need to call and when you submit the code and that api will replace the test file with the actual one in the predict function where it process one sample at a time\n\n\n\nIt is hard to explain if you are very new to this, but you can check any public code in this competition that is very simple and look at how the predictions are submitted at the end" }, { "id": 3271218, "postDate": "2025-08-18T10:39:50.200Z", "rawMarkdown": "", "votes": -1, "isDeleted": true, "replies": [ { "id": 3271220, "postDate": "2025-08-18T10:40:37Z", "rawMarkdown": "", "votes": -1, "isDeleted": true, "replies": [ { "id": 3271253, "postDate": "2025-08-18T12:13:58.553Z", "content": "Hello, have you encountered the same problem? Even after waiting for a while, it still shows submission failed.
", "rawMarkdown": "Hello, have you encountered the same problem? Even after waiting for a while, it still shows submission failed." }, { "id": 3271498, "postDate": "2025-08-19T02:57:29.820Z", "rawMarkdown": "", "votes": -1, "isDeleted": true }, { "id": 3271500, "postDate": "2025-08-19T03:19:24.743Z", "content": "please don't share misinformation
", "rawMarkdown": "please don't share misinformation" } ] } ] } ], "comments": [ { "id": 3271501, "author_name": "Taha_Alshatiri", "author_url": "", "post_date": "2025-08-19T03:26:42.457000", "content": "in this competition you can't just save a prediction file and send it, the test file you see in your code is a fake file with 2 sequences only, there is an api provided by kaggle that you need to call and when you submit the code and that api will replace the test file with the actual one in the predict function where it process one sample at a time
\nIt is hard to explain if you are very new to this, but you can check any public code in this competition that is very simple and look at how the predictions are submitted at the end
", "votes": 0, "replies": [] }, { "id": 3271218, "author_name": "", "author_url": "", "post_date": "2025-08-18T10:39:50.200000", "content": "", "votes": -1, "replies": [ { "id": 3271220, "author_name": "", "author_url": "", "post_date": "2025-08-18T10:40:37", "content": "", "votes": -1, "replies": [ { "id": 3271253, "author_name": "Yichi", "author_url": "", "post_date": "2025-08-18T12:13:58.553000", "content": "Hello, have you encountered the same problem? Even after waiting for a while, it still shows submission failed.
", "votes": 0, "replies": [] }, { "id": 3271498, "author_name": "", "author_url": "", "post_date": "2025-08-19T02:57:29.820000", "content": "", "votes": -1, "replies": [] }, { "id": 3271500, "author_name": "Taha_Alshatiri", "author_url": "", "post_date": "2025-08-19T03:19:24.743000", "content": "please don't share misinformation
", "votes": 0, "replies": [] } ] } ] } ], "raw_markdown_by_id": { "3271211": "Help! I’m a beginner on Kaggle. I’ve already written my code, and according to the competition requirements I saved a parquet file at the end. But every time I submit, it shows:\n\n“Notebook Inference Server Never Started\nYour submission notebook may not have started the inference server that is called to obtain predictions. This could mean you forgot to start it, or the notebook crashed. See more debugging tips.”\n\nBut I clearly already have an Output file and my notebook runs within the time limits.\n\nhttps://www.kaggle.com/code/yichi02/cmi-v2\n\n", "3271501": "in this competition you can't just save a prediction file and send it, the test file you see in your code is a fake file with 2 sequences only, there is an api provided by kaggle that you need to call and when you submit the code and that api will replace the test file with the actual one in the predict function where it process one sample at a time\n\n\n\nIt is hard to explain if you are very new to this, but you can check any public code in this competition that is very simple and look at how the predictions are submitted at the end", "3271218": "" } }