fail to do a checkpoint syncing

[SimonSMH1015]

when i trying to use the --checkpoint-sync-url for syncing my node ,I notice that all urls provided form https://eth-clients.github.io/checkpoint-sync-endpoints/ gave me 500 response. Here below is the logs

Error retrieving checkpoint origin state and block: erroe requesting state by id = finalized: code=500,url= https://sepolia.checkpoint-sync.ethdevops.io/.
(I tried all 3 urls provided ,none of them gave me 200 responses)

So, I used --enable-debug-rpc-endpoints on my other node, which has already synced. And by replacing --checkpoint-sync-url to my own nodes ip:3500, I got following errors

level=info msg="detected supported config in remote finalized state, name=sepolia, fork=capella" Error retrieving checkpoint origin state and block : unable to unmarshal block to a supported type using the detected fork schedule: unable to initialize BeaconBlock for fork version=capella at slot=1821856

Any ideas about this problem? I am wondering if the checkpoint can still be used after the capella fork.

[SimonSMH1015]

I almost forget ,Both beacon chain are running under latest prysm client, 3.2.1.