Php - CRITICAL Uncaught Exception: Failed to start the session because headers have already been sent by

Shopware 6 (German)
1

Hallo zusammen,

wir nutzen die Shopware Version 6.4.20.1 und haben mehrere folgender Fehlermeldung im Log stehen:

Uncaught Exception: Failed to start the session because headers have already been sent by „/home/beuoynmh/www.xxx.com/webshops/xxxSW6/vendor/symfony/http-foundation/Response.php“ at line 1250. {„exception“:„[object] (RuntimeException(code: 0): Failed to start the session because headers have already been sent by "/home/beuoynmh/www.xxxx.com/webshops/xxxSW6/vendor/symfony/http-foundation/Response.php" at line 1250. at /home/beuoynmh/www.xxx.com/webshops/xxxSW6/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php:145)“}

Im Forum konnte ich nichts dazu finden.
Hat jemand eine Lösung für die Fehlermeldung?

Gruß
Markus