[Bedrock][PS5] World fails to load after enabling experimental “New Golem” toggle prior to update → Error Code: Panda (Prospero Prerequisites-12)

Summary

[Bedrock][PS5] World fails to load after enabling experimental features (Error Code: Panda – Prospero Error Detail Prerequisites-12)

AFFECTS VERSION

Minecraft Bedrock Edition – PlayStation 5 – v1.21.111
(Note: Version not listed in dropdown, entering manually here.)

Platform

PlayStation 5 (world originally created on PlayStation 4 and upgraded to PS5)

Steps to Reproduce

1. Create or load a world on PS4.

2. Transfer/save it to PS5.

3. Enable multiple Experimental Features (including one that was later removed in v1.21.111).

4. Build extensively in the world (large city + mansion).

5. Update to Minecraft Bedrock v1.21.111.

6. Attempt to load the world.

Observed Results

World fails to load entirely.

Error code appears:
Panda (Prospero Error Detail Prerequisites-12).

Unable to access or convert/save the world further.

Expected Results

World should load normally after update.

If experimental features are deprecated, the game should provide a safe fallback or conversion option instead of preventing world access entirely.

Notes

The world is approximately 1.5 GB in size.

Issue may be linked to missing/removed experimental features that were enabled prior to the update.

I also have 3 mods attached to the world. Unsure if these affect the failure, but issue persists even after disabling content packs.

Last successful save was 11:58 PM, just before updating to v1.21.111.

My theory is that after using the experimental golums the update may possibly caused an effect to where the world doesn't want to load. I've had this world since 2016 PS4 version and extensively built a whole city with a lot of major builds 1040 hours of play time just on PS5 not including PS4. I reached out to Mojang support and this is my last call before I have to wait and hope for the next patch/update that it would fix this. Any way to further investigate this?