Laravel 5-PHP警告:ZipArchive::extractTo(）:无效或单元化的Zip对象

我在创建新的laravel项目时遇到了一个小问题。昨天我创建了一个没有问题的新项目，但今天我得到了这个错误：

PHP Warning:  ZipArchive::extractTo(): Invalid or unitialized Zip object in /home/tomas/.composer/vendor/laravel/installer/src/NewCommand.php on line 114
PHP Warning:  ZipArchive::close(): Invalid or unitialized Zip object in /home/tomas/.composer/vendor/laravel/installer/src/NewCommand.php on line 116

我以为我没有/home/tomas/.comporter/vendor/laraavel/installer/src/NewCommand.php的权限，但我拥有所有权限。

你不知道哪里会有问题吗？非常感谢。

编辑：

我刚运行命令：laravel new projectName

<?php namespace Laravel'Installer'Console;
use ZipArchive;
use Symfony'Component'Process'Process;
use Symfony'Component'Console'Input'InputArgument;
use Symfony'Component'Console'Input'InputInterface;
use Symfony'Component'Console'Output'OutputInterface;
class NewCommand extends 'Symfony'Component'Console'Command'Command {
/**
 * Configure the command options.
 *
 * @return void
 */
protected function configure()
{
    $this->setName('new')
            ->setDescription('Create a new Laravel application.')
            ->addArgument('name', InputArgument::REQUIRED);
}
/**
 * Execute the command.
 *
 * @param  InputInterface  $input
 * @param  OutputInterface  $output
 * @return void
 */
protected function execute(InputInterface $input, OutputInterface $output)
{
    $this->verifyApplicationDoesntExist(
        $directory = getcwd().'/'.$input->getArgument('name'),
        $output
    );
    $output->writeln('<info>Crafting application...</info>');
    $this->download($zipFile = $this->makeFilename())
         ->extract($zipFile, $directory)
         ->cleanUp($zipFile);
    $composer = $this->findComposer();
    $commands = array(
        $composer.' run-script post-install-cmd',
        $composer.' run-script post-create-project-cmd',
    );
    $process = new Process(implode(' && ', $commands), $directory, null, null, null);
    $process->run(function($type, $line) use ($output)
    {
        $output->write($line);
    });
    $output->writeln('<comment>Application ready! Build something amazing.</comment>');
}
/**
 * Verify that the application does not already exist.
 *
 * @param  string  $directory
 * @return void
 */
protected function verifyApplicationDoesntExist($directory, OutputInterface $output)
{
    if (is_dir($directory))
    {
        $output->writeln('<error>Application already exists!</error>');
        exit(1);
    }
}
/**
 * Generate a random temporary filename.
 *
 * @return string
 */
protected function makeFilename()
{
    return getcwd().'/laravel_'.md5(time().uniqid()).'.zip';
}
/**
 * Download the temporary Zip to the given file.
 *
 * @param  string  $zipFile
 * @return $this
 */
protected function download($zipFile)
{
    $response = 'GuzzleHttp'get('http://cabinet.laravel.com/latest.zip')->getBody();
    file_put_contents($zipFile, $response);
    return $this;
}
/**
 * Extract the zip file into the given directory.
 *
 * @param  string  $zipFile
 * @param  string  $directory
 * @return $this
 */
protected function extract($zipFile, $directory)
{
    $archive = new ZipArchive;
    $archive->open($zipFile);
    $archive->extractTo($directory);
    $archive->close();
    return $this;
}
/**
 * Clean-up the Zip file.
 *
 * @param  string  $zipFile
 * @return $this
 */
protected function cleanUp($zipFile)
{
    @chmod($zipFile, 0777);
    @unlink($zipFile);
    return $this;
}
/**
 * Get the composer command for the environment.
 *
 * @return string
 */
protected function findComposer()
{
    if (file_exists(getcwd().'/composer.phar'))
    {
        return '"'.PHP_BINARY.'" composer.phar';
    }
    return 'composer';
}
}