安装不上，提示错误

不知道为什么，我后台框架上传后，打开网址提示如下错误。
环境：
centos8、宝塔搭建
MySQL5.7.34
PHP7.3、7.4、8.0都试过。（php-redis扩展已安装）
Redis 6.2.6
```
Warning: require(/www/wwwroot/xxxx.com/vendor/composer/../symfony/polyfill-php80/bootstrap.php): failed to open stream: No such file or directory in /www/wwwroot/xxxx.com/vendor/composer/autoload_real.php on line 69

Fatal error: require(): Failed opening required '/www/wwwroot/xxxx.com/vendor/composer/../symfony/polyfill-php80/bootstrap.php' (include_path='.:') in /www/wwwroot/xxxx.com/vendor/composer/autoload_real.php on line 69
```

```

Warning: require(/www/wwwroot/xxxx.com/vendor/composer/../symfony/polyfill-php80/bootstrap.php): Failed to open stream: No such file or directory in /www/wwwroot/xxxx.com/vendor/composer/autoload_real.php on line 69

Fatal error: Uncaught Error: Failed opening required '/www/wwwroot/xxxx.com/vendor/composer/../symfony/polyfill-php80/bootstrap.php' (include_path='.:') in /www/wwwroot/xxxx.com/vendor/composer/autoload_real.php:69 Stack trace: #0 /www/wwwroot/xxxx.com/vendor/composer/autoload_real.php(59): composerRequire6667f9bcbb542898b8b960d4d01daf59() #1 /www/wwwroot/xxxx.com/vendor/autoload.php(7): ComposerAutoloaderInit6667f9bcbb542898b8b960d4d01daf59::getLoader() #2 /www/wwwroot/xxxx.com/public/index.php(15): require('...') #3 {main} thrown in /www/wwwroot/xxxx.com/vendor/composer/autoload_real.php on line 69
```

JaylenTech/TN_website_opensource

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JaylenTech/TN_website_opensource .gitee-modal { width: 500px !important; }

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