PHP Fatal error:  require(): Cannot redeclare class phpdocumentor\bootstrap in /usr/share/php/phpDocumentor/vendor/composer/ClassLoader.php on line 150
PHP Stack trace:
PHP   1. {main}() /usr/share/php/phing.php:0
PHP   2. Phing::fire() /usr/share/php/phing.php:37
PHP   3. Phing::start() /usr/share/php/phing/Phing.php:270
PHP   4. Phing->runBuild() /usr/share/php/phing/Phing.php:170
PHP   5. Project->executeTargets() /usr/share/php/phing/Phing.php:564
PHP   6. Project->executeTarget() /usr/share/php/phing/Project.php:751
PHP   7. Target->performTasks() /usr/share/php/phing/Project.php:778
PHP   8. Target->main() /usr/share/php/phing/Target.php:321
PHP   9. Task->perform() /usr/share/php/phing/Target.php:298
PHP  10. PhpDocumentor2Task->main() /usr/share/php/phing/Task.php:260
PHP  11. PhpDocumentor2Task->initializePhpDocumentor() /usr/share/php/phing/tasks/ext/phpdoc/PhpDocumentor2Task.php:211
PHP  12. Composer\Autoload\ClassLoader->loadClass() /usr/share/php/phing/tasks/ext/phpdoc/PhpDocumentor2Task.php:0