使用脚本安装时报错

```
 gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now
./ubuntu-ss-install.sh: 89: cd: can't cd to mbedtls-2.16.5
make: *** No targets specified and no makefile found.  Stop.
make: *** No rule to make target 'install'.  Stop.
Failed to install MbedTLS.
```
这是报错信息
操作系统是 ubuntu20.04,没有多余动作，很干净的机子就直接运行脚本