RVC-Project/Retrieval-based-Voice-Conversion-WebUI

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[GH-ISSUE #256] 无法创建索引 #126

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opened 2026-10-20 09:55:32 +00:00 by bsakaguchi · 11 comments

bsakaguchi commented

2026-10-20 09:55:32 +00:00

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Originally created by @koaqiu on GitHub (May 9, 2023).
Original GitHub issue: https://github.com/RVC-Project/Retrieval-based-Voice-Conversion-WebUI/issues/256

ValueError: need at least one array to concatenate

/root/miniconda3/envs/rvc/lib/python3.10/site-packages/torch/optim/lr_scheduler.py:138: UserWarning: Detected call of `lr_scheduler.step()` before `optimizer.step()`. In PyTorch 1.1.0 and later, you should call them in the opposite order: `optimizer.step()` before `lr_scheduler.step()`.  Failure to do this will result in PyTorch skipping the first value of the learning rate schedule. See more details at https://pytorch.org/docs/stable/optim.html#how-to-adjust-learning-rate
  warnings.warn("Detected call of `lr_scheduler.step()` before `optimizer.step()`. "
Traceback (most recent call last):
  File "/root/miniconda3/envs/rvc/lib/python3.10/site-packages/gradio/routes.py", line 393, in run_predict
    output = await app.get_blocks().process_api(
  File "/root/miniconda3/envs/rvc/lib/python3.10/site-packages/gradio/blocks.py", line 1108, in process_api
    result = await self.call_function(
  File "/root/miniconda3/envs/rvc/lib/python3.10/site-packages/gradio/blocks.py", line 929, in call_function
    prediction = await anyio.to_thread.run_sync(
  File "/root/miniconda3/envs/rvc/lib/python3.10/site-packages/anyio/to_thread.py", line 31, in run_sync
    return await get_asynclib().run_sync_in_worker_thread(
  File "/root/miniconda3/envs/rvc/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 937, in run_sync_in_worker_thread
    return await future
  File "/root/miniconda3/envs/rvc/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 867, in run
    result = context.run(func, *args)
  File "/root/miniconda3/envs/rvc/lib/python3.10/site-packages/gradio/utils.py", line 490, in async_iteration
    return next(iterator)
  File "/root/autodl-tmp/Retrieval-based-Voice-Conversion-WebUI/infer-web.py", line 898, in train1key
    big_npy = np.concatenate(npys, 0)
  File "<__array_function__ internals>", line 180, in concatenate
ValueError: need at least one array to concatenate

Originally created by @koaqiu on GitHub (May 9, 2023). Original GitHub issue: https://github.com/RVC-Project/Retrieval-based-Voice-Conversion-WebUI/issues/256 `ValueError: need at least one array to concatenate` ``` /root/miniconda3/envs/rvc/lib/python3.10/site-packages/torch/optim/lr_scheduler.py:138: UserWarning: Detected call of `lr_scheduler.step()` before `optimizer.step()`. In PyTorch 1.1.0 and later, you should call them in the opposite order: `optimizer.step()` before `lr_scheduler.step()`. Failure to do this will result in PyTorch skipping the first value of the learning rate schedule. See more details at https://pytorch.org/docs/stable/optim.html#how-to-adjust-learning-rate warnings.warn("Detected call of `lr_scheduler.step()` before `optimizer.step()`. " Traceback (most recent call last): File "/root/miniconda3/envs/rvc/lib/python3.10/site-packages/gradio/routes.py", line 393, in run_predict output = await app.get_blocks().process_api( File "/root/miniconda3/envs/rvc/lib/python3.10/site-packages/gradio/blocks.py", line 1108, in process_api result = await self.call_function( File "/root/miniconda3/envs/rvc/lib/python3.10/site-packages/gradio/blocks.py", line 929, in call_function prediction = await anyio.to_thread.run_sync( File "/root/miniconda3/envs/rvc/lib/python3.10/site-packages/anyio/to_thread.py", line 31, in run_sync return await get_asynclib().run_sync_in_worker_thread( File "/root/miniconda3/envs/rvc/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 937, in run_sync_in_worker_thread return await future File "/root/miniconda3/envs/rvc/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 867, in run result = context.run(func, *args) File "/root/miniconda3/envs/rvc/lib/python3.10/site-packages/gradio/utils.py", line 490, in async_iteration return next(iterator) File "/root/autodl-tmp/Retrieval-based-Voice-Conversion-WebUI/infer-web.py", line 898, in train1key big_npy = np.concatenate(npys, 0) File "<__array_function__ internals>", line 180, in concatenate ValueError: need at least one array to concatenate ```

bsakaguchi added the

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2026-10-20 09:55:32 +00:00

bsakaguchi commented

2026-10-20 09:55:33 +00:00

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@RVC-Boss commented on GitHub (May 9, 2023):

你看看3_feature256文件夹下有没有东西（或者有没有这个文件夹）

@RVC-Boss commented on GitHub (May 9, 2023): 你看看3_feature256文件夹下有没有东西（或者有没有这个文件夹）

bsakaguchi commented

2026-10-20 09:55:33 +00:00

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@koaqiu commented on GitHub (May 10, 2023):

@RVC-Boss 有目录，空的。

点击一键生成的时候，UI上的显示是成功的。控制台会报错。
单独点“索引”UI没有任何显示，控制台报错

@koaqiu commented on GitHub (May 10, 2023): @RVC-Boss 有目录，空的。点击一键生成的时候，UI上的显示是成功的。控制台会报错。单独点“索引”UI没有任何显示，控制台报错

bsakaguchi commented

2026-10-20 09:55:34 +00:00

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@RVC-Boss commented on GitHub (May 10, 2023):

step2提特征有报错要截图我看下

@RVC-Boss commented on GitHub (May 10, 2023): step2提特征有报错要截图我看下

bsakaguchi commented

2026-10-20 09:55:34 +00:00

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@koaqiu commented on GitHub (May 10, 2023):

step2提特征有报错要截图我看下
这是
/Retrieval-based-Voice-Conversion-WebUI/logs/mi-test/
下的所有log文件，现在没有gpu资源开机不了，这是昨天的记录

train-log.zip

@koaqiu commented on GitHub (May 10, 2023): > step2提特征有报错要截图我看下这是 /Retrieval-based-Voice-Conversion-WebUI/logs/mi-test/ 下的所有log文件，现在没有gpu资源开机不了，这是昨天的记录 [train-log.zip](https://github.com/RVC-Project/Retrieval-based-Voice-Conversion-WebUI/files/11439128/train-log.zip)

bsakaguchi commented

2026-10-20 09:55:34 +00:00

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@koaqiu commented on GitHub (May 10, 2023):

step2提特征有报错要截图我看下

我本地 windows下cpu跑也是一样的错误，要不要我本地跑的数据

@koaqiu commented on GitHub (May 10, 2023): > step2提特征有报错要截图我看下我本地 windows下cpu跑也是一样的错误，要不要我本地跑的数据

bsakaguchi commented

2026-10-20 09:55:34 +00:00

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@marktiwnzhao commented on GitHub (Jun 6, 2023):

I met the same problem. So, Is there a solution?

@marktiwnzhao commented on GitHub (Jun 6, 2023): I met the same problem. So, Is there a solution?

bsakaguchi commented

2026-10-20 09:55:34 +00:00

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@coder-huo commented on GitHub (Jun 18, 2023):

3060Ti，一样的问题。有什么解决办法吗？

@coder-huo commented on GitHub (Jun 18, 2023): 3060Ti，一样的问题。有什么解决办法吗？

bsakaguchi commented

2026-10-20 09:55:35 +00:00

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@Chaoriticle commented on GitHub (Aug 4, 2023):

一样的问题，使用的是autodl的3080，一键训练后webui显示error，单独点“索引”UI没有任何显示，控制台报错。实测weight文件夹生成了.py文件，但log文件夹中找不到index文件，控制台同样报错ValueError: need at least one array to concatenate 3_feature768文件夹下无任何内容，但是文件夹本身存在。

@Chaoriticle commented on GitHub (Aug 4, 2023): 一样的问题，使用的是autodl的3080，一键训练后webui显示error，单独点“索引”UI没有任何显示，控制台报错。实测weight文件夹生成了.py文件，但log文件夹中找不到index文件，控制台同样报错ValueError: need at least one array to concatenate 3_feature768文件夹下无任何内容，但是文件夹本身存在。

bsakaguchi commented

2026-10-20 09:55:35 +00:00

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@Chaoriticle commented on GitHub (Aug 4, 2023):

一样的问题，使用的是autodl的3080，一键训练后webui显示error，单独点“索引”UI没有任何显示，控制台报错。实测weight文件夹生成了.py文件，但log文件夹中找不到index文件，控制台同样报错ValueError: need at least one array to concatenate 3_feature768文件夹下无任何内容，但是文件夹本身存在。

已解决，因为第一次训练没有在文件路径前加上/root/导致后面一系列报错，换一台机子记得把/root/加上就好。

@Chaoriticle commented on GitHub (Aug 4, 2023): > 一样的问题，使用的是autodl的3080，一键训练后webui显示error，单独点“索引”UI没有任何显示，控制台报错。实测weight文件夹生成了.py文件，但log文件夹中找不到index文件，控制台同样报错ValueError: need at least one array to concatenate 3_feature768文件夹下无任何内容，但是文件夹本身存在。已解决，因为第一次训练没有在文件路径前加上/root/导致后面一系列报错，换一台机子记得把/root/加上就好。

bsakaguchi commented

2026-10-20 09:55:35 +00:00

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Owner

@Chaoriticle commented on GitHub (Aug 4, 2023):

3060Ti，一样的问题。有什么解决办法吗？

已解决，因为第一次训练没有在文件路径前加上/root/导致后面一系列报错，换一台机子记得把/root/加上就好。

@Chaoriticle commented on GitHub (Aug 4, 2023): > 3060Ti，一样的问题。有什么解决办法吗？已解决，因为第一次训练没有在文件路径前加上/root/导致后面一系列报错，换一台机子记得把/root/加上就好。

bsakaguchi commented

2026-10-20 09:55:36 +00:00

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@stickbrime commented on GitHub (Oct 5, 2023):

3060Ti，一样的问题。有什么解决办法吗？

已解决，因为第一次训练没有在文件路径前加上/root/导致后面一系列报错，换一台机子记得把/root/加上就好。

no idea where to put the "/root/".could you please post a screenshot at least?

@stickbrime commented on GitHub (Oct 5, 2023): > > 3060Ti，一样的问题。有什么解决办法吗？ > > 已解决，因为第一次训练没有在文件路径前加上/root/导致后面一系列报错，换一台机子记得把/root/加上就好。 no idea where to put the "/root/".could you please post a screenshot at least?