RuntimeException: "Failed to start the session because headers have already been sent by?

Grüße Euch - habe seit der 6.5.x jede Stunde folgende Critical Fehler im Log:

[2023-08-23T00:15:02.824129+00:00] request.CRITICAL: Uncaught PHP Exception RuntimeException: „Failed to start the session because headers have already been sent by „/home/gartened/public_html/domet.de/vendor/symfony/http-foundation/Response.php“ at line 410.“ at /home/gartened/public_html/domet.de/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php line 132 {„exception“:„[object] (RuntimeException(code: 0): Failed to start the session because headers have already been sent by "/home/gartened/public_html/domet.de/vendor/symfony/http-foundation/Response.php" at line 410. at /home/gartened/public_html/domet.de/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php:132)“}

[2023-08-23T00:15:02.865758+00:00] php.CRITICAL: Uncaught Exception: Failed to start the session because headers have already been sent by „/home/gartened/public_html/domet.de/vendor/symfony/http-foundation/Response.php“ at line 410. {„exception“:„[object] (RuntimeException(code: 0): Failed to start the session because headers have already been sent by "/home/gartened/public_html/domet.de/vendor/symfony/http-foundation/Response.php" at line 410. at /home/gartened/public_html/domet.de/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php:132)“}

[2023-08-23T00:15:02.867686+00:00] request.CRITICAL: Uncaught PHP Exception RuntimeException: „Failed to start the session because headers have already been sent by „/home/gartened/public_html/domet.de/vendor/symfony/http-foundation/Response.php“ at line 410.“ at /home/gartened/public_html/domet.de/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php line 132 {„exception“:„[object] (RuntimeException(code: 0): Failed to start the session because headers have already been sent by "/home/gartened/public_html/domet.de/vendor/symfony/http-foundation/Response.php" at line 410. at /home/gartened/public_html/domet.de/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php:132)“}

[2023-08-23T00:15:02.870197+00:00] php.CRITICAL: Uncaught Exception: Failed to start the session because headers have already been sent by „/home/gartened/public_html/domet.de/vendor/symfony/http-foundation/Response.php“ at line 410. {„exception“:„[object] (RuntimeException(code: 0): Failed to start the session because headers have already been sent by "/home/gartened/public_html/domet.de/vendor/symfony/http-foundation/Response.php" at line 410. at /home/gartened/public_html/domet.de/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php:132)“}

Kann mir Jemand einen Tipp geben um was es geht - wäre sehr dankbar!

Hier meine PHP-Settings: PHP 8.1.18 - phpinfo()

Grüße

Michael

Bei uns auch so. Weiß hier jemand was? Die Logfiles werden dadurch natürlich extrem groß…