求助 lnmp安装失败

峰样

vps:搬瓦工   256m内存，装了个ss剩余230m   磁盘还有8g纯小白，特来求助
日志在下面

licess

/usr/bin/yum: line 5: import: command not found
/usr/bin/yum: line 6: try:: command not found
/usr/bin/yum: line 7: import: command not found
/usr/bin/yum: line 8: except: command not found
/usr/bin/yum: line 26: syntax error near unexpected token `('
/usr/bin/yum: line 26: `""" % (sys.exc_value, sys.version)'

你这个系统上的yum命令有问题导致的