HTTP 500 - error - {"success":true,"message":""} Unzip the PrestaShop installation package and find the /prestashop folder. Open /app/AppKernel.php file in a text editor. Locate the getContainerClearCacheLockPath function. Replace the existing code with the following: protected function getContainerClearCacheLockPath(): string { $class = $this->getContainerClass(); $cacheDir = sys_get_temp_dir(); //$this->getCacheDir(); return sprintf('%s/%s.php.cache_clear.lock', $cacheDir, $class); } Important: Revert After Installation