Summary
World fails to load after enabling experimental features (Error Code: Panda – Prospero Error Detail Prerequisites-12)
Steps to Reproduce
Create or load a world on PS4.
Transfer/save it to PS5.
Enable multiple Experimental Features (including one that was later removed in v1.21.111).
Build extensively in the world (large city + mansion).
Update to Minecraft Bedrock v1.21.111.
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?
Environment
Platform: PlayStation 5 (Digital)
World Origin: Originally created on PlayStation 4, later imported/bridged to PS5
World Size: ~1.5 GB (large build: city + mansion)
Storage: Local PS5 save + cloud save (both fail)
Mods/Add-ons: 3 attached; also tested with all disabled → still fails
Experimental Features: New Golem toggle was enabled before update
Network: Fails both offline and online
Last Known Working Version: 1.21.0 (before 1.21.111 update)
Linked issues
is duplicated by 4
MCPE-228638
[Bedrock][PS5] World fails to load after enabling experimental “New Golem” toggle prior to update → Error Code: Panda (Prospero Prerequisites-12)
Resolved
MCPE-228758
After the new update I couldn’t log into my world
Resolved
MCPE-229177
The problem with entering the world
Resolved
MCPE-229440
"Panda" error code when loading world
Resolved
Attachments
Comments 12
Fixed it. After multiple attempts re downloading from cloud backup and changing settings reporting it's finally back!! Ty
All of them it took multiple attempts I turned on every setting and turned off what I could . I finally got it to start reporting straight from PS5 and after I changed skins on default (was already on before) I think that's the setting that got it to load. I did all this after I re downloading my back up file from cloud. I tried all of this a few days ago out of being desperate I kept trying to load it over and over again reporting each time. Then it magically loaded. I'm not completely sure what I did but just mess around. Delete cache as well that could of helped.
Just don't upload to realms if your file is over 600 MB just to be safe may corrupt or change and delete your world. If you do anything just make sure you have a back up. I couldn't duplicate my world file is 1.5gb
It doesn't work all the time. I guess is all about luck. I'll wait for an official update from Mojang.
Could you share the world file here to help the qa team to test further?.