WARNING(2): "require_once(C:\webs\10227\ur): failed to open stream: No such file or directory"

Fatal error: require_once(): Failed opening required 'C:\webs\10227\urlaubganzprivat.at\wwwroot\steiermark\vendor/composer/autoload_real.php' (include_path='.;C:\php\pear') in C:\webs\10227\urlaubganzprivat.at\wwwroot\steiermark\vendor\autoload.php on line 5
COMPILE ERROR(64): "require_once(): Failed opening required 'C:\webs\10227\urlaubganzprivat.at\wwwroot\steiermark\vendor/composer/autoload_real.php' (include_path='.;C:\php\pear')"