n58 示例 测试

[NTGP]

使用rt-thread studio 生成n58示例程序，编译后烧录运行，卡在网络注册这一步，提示 mutex ==NULL,
请问是什么原因？
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• RT - Thread Operating System
  / | \ 4.0.5 build Jan 19 2022 11:30:18
  2006 - 2021 Copyright by rt-thread team
  [1] I/sal.skt: Socket Abstraction Layer initialize success.
  [9] I/at.clnt: AT client(V1.3.1) on device uart3 initialize success.
  msh >[6017] I/at.dev: start initializing the n58 device(n58)
  [6299] I/at.dev: URC data : +PBREADY

[6331] I/at.dev:
[6334] I/at.dev: NEOWAY
[6337] I/at.dev: N58
[6340] I/at.dev: V004
[6349] I/at.dev: n58 device(n58) SIM card detection success.
[6356] I/at.dev: CCID: 89860434182180104341
[6861] I/at.dev: register network!
(mutex != RT_NULL) assertion failed at function:rt_mutex_take, line number:902