Error updating Symfony on Composer

Question

I cloned a git project, then run composer update command, I got this error message on composer:

  - Installing symfony/symfony (v2.2.4)
    Downloading: 100%



  [UnexpectedValueException]
  'E:\Sites\myapp-api\vendor/symfony/symfony/268ac81f41a8a73a56ef570d9e7980
  27.4' is not a zip archive.



update [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--lock]
 [--no-custom-installers] [--no-scripts] [--no-progress] [-v|vv|vvv|--verbose] [
-o|--optimize-autoloader] [packages1] ... [packagesN]

I tried to delete composer.lock and run composer update command again, still return the same error.

I also try to run composer update symfony/symfony, and with --prefer-dist but still return the same error message 'is not a zip archive'.

How to solve this problem?

---

I try and try again, and now there are 3 ites of downloading symfony/symfony

  - Installing symfony/symfony (v2.2.4)
    Downloading: 100%
  - Installing symfony/symfony (v2.2.4)
    Downloading: 100%
  - Installing symfony/symfony (v2.2.4)
    Downloading: 100%



  [UnexpectedValueException]
  'E:\Sites\trainme-api\vendor/symfony/symfony/698bb2e6e680e6c886eb5c70f5d93e
  97.4' is not a zip archive.

Answer 1

I had silimar issue. Clearing composer cache helped.

Look here: https://github.com/composer/composer/issues/1242

If You are using linux composer cache should be in: ~/.composer/

You can clear it with backup with this command:

 mv ~/.composer/cache ~/.composer/cache.bak

Update

Check cache-dir param in your composer.json

http://getcomposer.org/doc/04-schema.md#config

cache-dir: Defaults to $home/cache on unix systems and C:\Users\\AppData\Local\Composer on Windows. Stores all the caches used by composer. See also COMPOSER_HOME.

UPDATE:

You can find cache dir with command (thanks to @Permana):

 php composer.phar  config cache-dir