yii\base\ErrorException Object
(
    [message:protected] => PHP Startup: Unable to load dynamic library 'memcached.s' (tried: /usr/local/php/lib/php/extensions/no-debug-non-zts-20170718/memcached.s (/usr/local/php/lib/php/extensions/no-debug-non-zts-20170718/memcached.s: cannot open shared object file: No such file or directory), /usr/local/php/lib/php/extensions/no-debug-non-zts-20170718/memcached.s.so (/usr/local/php/lib/php/extensions/no-debug-non-zts-20170718/memcached.s.so: cannot open shared object file: No such file or directory))
    [string:Exception:private] => yii\base\ErrorException: PHP Startup: Unable to load dynamic library 'memcached.s' (tried: /usr/local/php/lib/php/extensions/no-debug-non-zts-20170718/memcached.s (/usr/local/php/lib/php/extensions/no-debug-non-zts-20170718/memcached.s: cannot open shared object file: No such file or directory), /usr/local/php/lib/php/extensions/no-debug-non-zts-20170718/memcached.s.so (/usr/local/php/lib/php/extensions/no-debug-non-zts-20170718/memcached.s.so: cannot open shared object file: No such file or directory)) in Unknown:0
Stack trace:
#0 [internal function]: yii\base\ErrorHandler->handleFatalError()
#1 {main}
    [code:protected] => 32
    [file:protected] => Unknown
    [line:protected] => 0
    [trace:Exception:private] => Array
        (
            [0] => Array
                (
                    [function] => handleFatalError
                    [class] => yii\base\ErrorHandler
                    [type] => ->
                    [args] => Array
                        (
                        )

                )

        )

    [previous:Exception:private] => 
    [severity:protected] => 32
)