php-fpm 报错，请问怎么解决
[23-Dec-2015 13:54:32] NOTICE: fpm is running, pid 26304
[23-Dec-2015 13:54:32] NOTICE: ready to handle connections
[23-Dec-2015 13:54:34] WARNING: [pool www] child 26305 exited with code 127 after 2.199784 seconds from start
[23-Dec-2015 13:54:34] NOTICE: [pool www] child 26325 started
[23-Dec-2015 13:54:35] WARNING: [pool www] child 26306 exited with code 127 after 2.997674 seconds from start
[23-Dec-2015 13:54:35] NOTICE: [pool www] child 26326 started
[23-Dec-2015 13:54:41] WARNING: [pool www] child 26307 exited with code 127 after 8.386694 seconds from start
[23-Dec-2015 13:54:41] NOTICE: [pool www] child 26328 started
[23-Dec-2015 13:57:55] NOTICE: Terminating ...
[23-Dec-2015 13:57:55] NOTICE: exiting, bye-bye!
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