php - CakePHP - Psr classes not found -


i have following errors:

fatal error: interface 'psr\http\message\serverrequestinterface' not found in /home/www/forex-arts/vendor/cakephp/cakephp/src/http/serverrequest.php on line 37

fatal error: interface 'psr\http\message\uriinterface' not found in /home/www/forex-arts/vendor/zendframework/zend-diactoros/src/uri.php on line 25

i using cakephp. know why receiving these errors?


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