How to reproduce:
# Import the attached package
# Open VFX
# Open AllProperties SG
# In the Blackboard, select TotalCount SamplerStater Matrix4x4 properties
# Using the shortcut delete, delete them
# Save the graph
# Undo action
# Save the graph

Note: if it is not reproducible from the first time, keep repeating 4-8 steps

Another note: this seems only to happen with ShaderGraph that are converted from old Integration to new Integration

Reproduced on 23.1.0a10

Few lines from the stacktrace:

{color:#0747a6}0x00007FFB3998E61B (Unity) VFXMemorySerializer::StoreObjects{color}
{color:#0747a6}0x00007FFB3998E883 (Unity) VFXMemorySerializerBindings::StoreObjectsToByteArray{color}
{color:#0747a6}0x00007FFB37A1673E (Unity) VFXMemorySerializer_CUSTOM_StoreObjectsToByteArray{color}
{color:#0747a6}0x000001BB40FA1A05 (Mono JIT Code) (wrapper managed-to-native) UnityEditor.VFX.VFXMemorySerializer:StoreObjectsToByteArray{color}