Plötzlich funktionieren keine PDF mehr...in allen Shops

Guten Morgen

Ich habe hier ein großes Problem und bin etwas am verzweifeln.

Von heute auf morgen funktioniert in keinem Shop die PDF-Rechnung mehr. Vorschau ergibt 524 CF Error, Rechnung erstellen endet in einem 0-Com Error und hat man automatische Rechnung angeschaltet, landet man ebenso auf 524 nach Bestellabschluss.

Der Fehler ist plötzlich ohne Änderungen aufgetreten, in manchen Shops geht es noch, in anderen nicht mehr. Aber zu 100% geht es nicht mehr, sobald man ein Backup erstellt und dieses installiert bzw. nutzt, wurde mehrfach probiert, verschiedene Backups, verschiedene Domains.

Der Fehler tritt nur auf, sobald man ein Logo per Medienmanager in die PDF-Rechnung eingefügt hat, dies endet in einer Endlosschleife. Ohne Logo wird die Rechnung angezeigt und erstellt.

Fehlermeldung überall (Domain ersetzt)

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Offensichtlich läuft plötzlich irgendwas mit dem Code oder PHP falsch, ich verstehe aber nicht wieso und wie ich es ändern könnte, zumal es bei alten Shops funktioniert, bei neu aufgesetzen aber nicht mehr,

System-Info: Neuste Plesk Version, Shopware 5.5.6, Speicher RAM etc mehr als ausreichend.

Hi, liegt an PHP 7.4. Bzw daran, dass Shopware nocht nicht ganz PHP 7.4 kompatibel ist. Wenn du die Möglichkeit hast, versuche die Shops vorrübergehend mit PHP 7.3 zu betreiben.

Ich habe hier ein Issue erstellt damit dieser Fehler behoben wird, bitte upvoten:
Shopware Issuetracker