语音唤醒一直出现Fail: index is out of range是怎么回事？

I (772) spi_flash: flash io: qio
I (772) cpu_start: Starting scheduler on PRO CPU.
I (0) cpu_start: Starting scheduler on APP CPU.
I (785) example_asr_keywords: Initialize SR wn handle
Quantized wakeNet5: wakeNet5_v1_hilexin_5_0.95_0.90, mode:0 (Oct 14 2020 16:26:17)
I (798) example_asr_keywords: keywords: hilexin (index = 1)
Fail: index is out of range, the min index is 1, the max index is 1I (804) example_asr_keywords: keywords_num = 1, threshold = 0.000000, sample_rate = 16000, chunksize = 480, sizeof_uint16 = 2
WARNING: Sample length must less than 5000ms in the SINGLE_RECOGNITION mode
SINGLE_RECOGNITION: 2_0 MN1_4; core: 0; (May 15 2020 14:50:27)
SHIFT: 8, 12, 17, 17, 19, 17, 6, 16, 15, 14,
I (847) example_asr_keywords: keywords_num = 166 , sample_rate = 16000, chunksize = 480, sizeof_uint16 = 2
I (848) example_asr_keywords: [ 1 ] Start codec chip
I (1355) example_asr_keywords: [ 2.0 ] Create audio pipeline for recording
I (1355) example_asr_keywords: [ 2.1 ] Create i2s stream to read audio data from codec chip
I (1376) example_asr_keywords: [ 2.3 ] Create raw to receive data
I (1376) example_asr_keywords: [ 3 ] Register all elements to audio pipeline
I (1380) example_asr_keywords: [ 4 ] Link elements together [codec_chip]-->i2s_stream-->raw-->[SR]
W (1491) I2C_BUS: i2c_bus_create:53: I2C bus has been already created, [port:0]

----------------------------- ESP Audio Platform -----------------------------
|                                                                            |
|                 ESP_AUDIO-v1.7.0-31-g5b8f999-3072767-09be8fe               |
|                     Compile date: Oct 14 2021-11:00:34                     |
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I (1556) example_asr_keywords: esp_audio instance is:0x3ffce8f0

I (1556) example_asr_keywords: [ 5 ] Start audio_pipeline