【已回应】个别云主机错误: bash: line 46: [: !=: unary operator

环境: 华为云 centos7.6
可以安装完成, 运行环境正常.但是有错误如下(特例):


2019-10-27 13:49:56 (7.07 MB/s) - ‘/www/server/panel/install/public.sh’ saved [3313/3313]

bash: line 46: [: !=: unary operator expected .....
Traceback (most recent call last):
  File "/bin/pip", line 7, in <module>
    from pip._internal.main import main
ImportError: No module named _internal.main
--2019-10-27 13:49:57--  119.188.210.21:5880/src/get-pip.py
Connecting to 119.188.210.21:5880... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1775087 (1.7M) [application/octet-stream]
Saving to: ‘get-pip.py’

pip  -V  看下返回信息，