Simplytest.me build error

When trying to setup this module on the sandbox simplytest.me, i get this error message:

In PluginManager.php line 738:
                                                                               
  cweagans/composer-patches contains a Composer plugin which is blocked by yo  
  ur allow-plugins config. You may add it to the list if you consider it safe  
  .                                                                            
  You can run "composer config --no-plugins allow-plugins.cweagans/composer-p  
  atches [true|false]" to enable it (true) or disable it explicitly and suppr  
  ess this exception (false)                                                   
  See https://getcomposer.org/allow-plugins      

https://simplytest.me/configure?project=layoutcomponents