Deprecated: The each() function is deprecated. This message will be suppressed on further calls vendor/colinmollenhour/cache-backend-file/File.php on line 81
这种情况一般是PHP版本问题，可以通过修改此PHP文件来修复。
打开文件
vendor/colinmollenhour/cache-backend-file/File.php
大约81行，从
while (list($name, $value) = each($options)) {
$this->setOption($name, $value);
}修改为
foreach ($options as $name => $value) {
$this->setOption($name, $value);
}