error

[RuntimeException]                                                                                              
  Failed to clone git@github.com:zendframework/Component_ZendStdlib.git via git, https, ssh protocols, aborting.  
  - git://github.com/zendframework/Component_ZendStdlib.git                                                       
    fatal: remote error:                                                                                          
      Repository not found.                                                                                       
  - https://github.com/zendframework/Component_ZendStdlib.git                                                     
    remote: Invalid username or password.                                                                         
    fatal: Authentication failed for 'https://github.com/zendframework/Component_ZendStdlib.git/'                 
  - git@github.com:zendframework/Component_ZendStdlib.git                                                         
    Permission denied (publickey).                                                                                
    fatal: Could not read from remote repository.                                                                 
                                                                                                                  
    Please make sure you have the correct access rights                                                           
    and the repository exists.