网站根目录多出了error_log这个文件，删除了又出现

网站根目录多出了error_log这个文件，删除了又出现怎么解决

[21-Oct-2016 08:59:49 Etc/GMT-8] PHP Warning:  xcache_get() [<a href='function.xcache-get'>function.xcache-get</a>]: XCache var cache was not initialized properly. Check php log for actual reason in /home/ulozmnza/public_html/source/class/memory/memory_driver_xcache.php on line 22
[21-Oct-2016 08:59:49 Etc/GMT-8] PHP Warning:  xcache_set() [<a href='function.xcache-set'>function.xcache-set</a>]: XCache var cache was not initialized properly. Check php log for actual reason in /home/ulozmnza/public_html/source/class/memory/memory_driver_xcache.php on line 26
[21-Oct-2016 10:21:44 Etc/GMT-8] PHP Warning:  xcache_get() [<a href='function.xcache-get'>function.xcache-get</a>]: XCache var cache was not initialized properly. Check php log for actual reason in /home/ulozmnza/public_html/source/class/memory/memory_driver_xcache.php on line 22
[21-Oct-2016 10:21:44 Etc/GMT-8] PHP Warning:  xcache_set() [<a href='function.xcache-set'>function.xcache-set</a>]: XCache var cache was not initialized properly. Check php log for actual reason in /home/ulozmnza/public_html/source/class/memory/memory_driver_xcache.php on line 26
[21-Oct-2016 10:49:52 Etc/GMT-8] PHP Warning:  xcache_get() [<a href='function.xcache-get'>function.xcache-get</a>]: XCache var cache was not initialized properly. Check php log for actual reason in /home/ulozmnza/public_html/source/class/memory/memory_driver_xcache.php on line 22
[21-Oct-2016 10:49:52 Etc/GMT-8] PHP Warning:  xcache_set() [<a href='function.xcache-set'>function.xcache-set</a>]: XCache var cache was not initialized properly. Check php log for actual reason in /home/ulozmnza/public_html/source/class/memory/memory_driver_xcache.php on line 26
[21-Oct-2016 17:05:13 Etc/GMT-8] PHP Warning:  xcache_get() [<a href='function.xcache-get'>function.xcache-get</a>]: XCache var cache was not initialized properly. Check php log for actual reason in /home/ulozmnza/public_html/source/class/memory/memory_driver_xcache.php on line 22
[21-Oct-2016 17:05:13 Etc/GMT-8] PHP Warning:  xcache_set() [<a href='function.xcache-set'>function.xcache-set</a>]: XCache var cache was not initialized properly. Check php log for actual reason in /home/ulozmnza/public_html/source/class/memory/memory_driver_xcache.php on line 26

检查php.ini中的错误日志的配置，可以放其他目录里或关闭