php72安装swoole插件提示Unable to load dynamic library 'swoole_loader72.so'

系统版本：Ubuntu 18.04.4 LTS(Py3.7.4)
主要问题简述:Unable to load dynamic library 'swoole_loader72.so'
问题详细报错：安装swoole.so之后，执行php -m；提示以下报错:
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1. root@aml:~# php -m
   
2. PHP Warning:  PHP Startup: Unable to load dynamic library 'swoole_loader72.so' (tried: /www/server/php/72/lib/php/extensions/no-debug-non-zts-20170718/swoole_loader72.so (/www/server/php/72/lib/php/extensions/no-debug-non-zts-20170718/swoole_loader72.so: cannot open shared object file: No such file or directory), /www/server/php/72/lib/php/extensions/no-debug-non-zts-20170718/swoole_loader72.so.so (/www/server/php/72/lib/php/extensions/no-debug-non-zts-20170718/swoole_loader72.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0

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安装步骤没有问题，主要可能在系统，本人小白  请求论坛大佬赐教