Composer更新错误，RecursiveDirectoryIterator

Question

向Laravel项目添加依赖项，然后运行composer update会发出一个错误，指出它找不到合适的路径。这是错误：

Loading composer repositories with package information
Updating dependencies (including require-dev)
  - Removing danielstjules/stringy (1.9.0)
  - Installing danielstjules/stringy (1.10.0)    

  [UnexpectedValueException]                                                   
  RecursiveDirectoryIterator::__construct(U:\home\nickmitchko\Site\vendor/danielstjules/stringy): failed to open dir: No error

您可以在此处看到该目录实际可访问：

任何人都知道一个解决方法，看起来路径分隔符在整个路径字符串中是不同的：

RecursiveDirectoryIterator::__construct(...)

更新1：

当路径没有空格时，仍然会发生错误。

Loading composer repositories with package information
Updating dependencies (including require-dev)
  - Removing symfony/var-dumper (v2.6.9)
  - Installing symfony/var-dumper (v2.6.11)



  [UnexpectedValueException]                                                   
  RecursiveDirectoryIterator::__construct(U:\home\nickmitchko\Documents\CMW\MXDSite\vendor/symfony/var-dumper/Symfony/Component/VarDumper): failed to op  
  en dir: No error