What happened?

Description

Server crash

Steps to reproduce

1. Create a matrix field, add some entries in the matrix then delete the matrix before saving.
2. It may be relevent that there is a nested matrix in the matrix entry.

Expected behavior

The entry would save as normal.

Actual behavior

The admin form appears to crash and also crashes the server.

Craft CMS version

5.6.1 (Solo)

PHP version

8.3.16

Operating system and version

Linux 6.8.0-51-generic

Database type and version

MariaDB 10.11.8

Image driver and version

Imagick 3.7.0 (ImageMagick 6.9.12-98)

Installed plugins and versions

• Button Box 5.0.0
• CKEditor 4.5.0
• Freeform 5.9.2
• SEOMate 3.1.1
• Smith 3.1.0