A few error code

Hello !
A few file are returning some security or hoping resources.

1.wp-content/plugins/amazon-web-services/vendor/aws/Aws/DynamoDb/Session/SessionHandler.php
code return
session_start on line #250: * Open a session for writing. Triggered by session_start()

2.wp-content/plugins/amazon-web-services/vendor/aws/Doctrine/Common/Cache/FileCache.php

code return
disk_free_space on line #150: $free = disk_free_space($this->directory);

3.wp-content/plugins/amazon-web-services/vendor/aws/Doctrine/Common/Cache/SQLite3Cache.php

code return 2 errors
exec on line #75: return $this->sqlite->exec(sprintf(
exec on line #145: return $this->sqlite->exec(sprintf(‘DELETE FROM %s’, $this->table));

4.

https://ww.wp.xz.cn/plugins/amazon-s3-and-cloudfront/