Hello, friend!
This problem cannot be accurately located because the TAC log of the mobile phone needs to be viewed.
However, I have handled similar cases for your reference. When the TCM disk partition of the CT company is full, some services that generate data may be unavailable.

You can query the disk usage of the VM. If the disk space is insufficient, expand or clear the disk space. I hope it helps you!
Note:
You are advised to collect more information and contact the local TAC.
https://e.huawei.com/en/service-hotline-query