解决Warning: unlink(/storage/cache/cache.catalog.language.1556158719): No such file or directory in /system/library/cache/file.php on line 68问题

ytkah在调试opencart项目时提示Warning: unlink(/storage/cache/cache.catalog.language.1556158719): No such file or directory in /system/library/cache/file.php on line 68，出现这个问题首先确认是否权限不够，如果权限不够，可以把对应的文件夹设为777。以下是详细的解决方案

1.设置权限，/system/storage/和/image/设为755或777

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chmod 0755 or 0777 system/storage/cache/ chmod 0755 or 0777 system/storage/download/ chmod 0755 or 0777 system/storage/logs/ chmod 0755 or 0777 system/storage/modification/ chmod 0755 or 0777 system/storage/session/ chmod 0755 or 0777 system/storage/upload/ chmod 0755 or 0777 system/storage/vendor/ chmod 0755 or 0777 image/ chmod 0755 or 0777 image/cache/ chmod 0755 or 0777 image/catalog/

　　

2.清理缓存：extensions - modification - refresh
dashboard - cache右上角 - refresh
浏览器清理缓存：ctrl + f5强制刷新
3.如果还是出现那个提示，可以试试更新/system/library/cache/file.php文件

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<?php namespace Cache; class File {     private $expire;       public function __construct($expire = 3600) {         $this->expire = $expire;           $files = glob(DIR_CACHE . 'cache.*');           if ($files) {             foreach ($files as $file) {                 $filename = basename($file);                   $time = substr(strrchr($file, '.'), 1);                   if ($time < time()) {                     $this->delete(substr($filename, 6, strrpos($filename, '.') - 6));                 }             }         }     }       public function get($key) {         $files = glob(DIR_CACHE . 'cache.' . basename($key) . '.*');           if ($files) {             $handle = fopen($files[0], 'r');               flock($handle, LOCK_SH);               $size = filesize($files[0]);               if ($size > 0) {                 $data = fread($handle, $size);             } else {                 $data = '';             }               flock($handle, LOCK_UN);               fclose($handle);               return json_decode($data, true);         }           return false;     }       public function set($key, $value) {         $this->delete($key);           $file = DIR_CACHE . 'cache.' . basename($key) . '.' . (time() + $this->expire);           $handle = fopen($file, 'w');           flock($handle, LOCK_EX);           fwrite($handle, json_encode($value));           fflush($handle);           flock($handle, LOCK_UN);           fclose($handle);     }       public function delete($key) {         $files = glob(DIR_CACHE . 'cache.' . basename($key) . '.*');           if ($files) {             foreach ($files as $file) {                 if (!@unlink($file)) {                     clearstatcache(false, $file);                 }             }         }     } }

　　具体文件以官方为准https://github.com/opencart/opencart/edit/master/upload/system/library/cache/file.php