Cannot add new PGP key via curl after revoked an old key

Short steps

1. Click add a PGP key on webpage
2. Paste my pubkey on the dialog
3. Execute command from dialog
4. curl finally says: curl: (52) Empty reply from server

Then I refreshed the webpage, no PGP key was shown on my page.

Also tried keybase id frantic1048 , I get ▶ ERROR (error 901) .

Then I repeated again above operation, at the curl step, I get

Error in your post
-------------------

Code: 908
Name: KEY_NEED_REVOKE
Description: You need to delete your active key before uploading a new one

It looks like my key is uploaded. But I can't find my key via webpage or keybase id

Long story

You can follow this log for extra information: https://keybase.io/frantic1048/sigchain

• I registered keybase.
• Login with CLI version of keybase
• Generated a device key, and paper key
• Added PGP key with with CLI version of keybase
• added some proofs

So far, everything looks good.

Then I found device key is a little superfluous for me, I want to manage my key like this -> https://keybase.io/alexmartin/graph .

• I keybase deprovision my device.
• The webpage still shows my PGP key, but with red ooops text beside it.
• I click that text, it says I need to re-verify my pubkey
• I follow the instruction, paste curl command from webpage to terminal

curl gets:

Error in your post
-------------------

Code: 908
Name: KEY_NEED_REVOKE
Description: You need to delete your active key before uploading a new one

I've no idea why this happened. Then I revoked my old key, tried to add the new key. But I found I cannot add my new key as above Short steps described.

my keybase profile : https://keybase.io/frantic1048/
my log id: 099b2bfbabd736f18cb4321c

Start by reproducing the webpage's curl flow after revoking the old key, then compare the reported 901 and 908 responses with the linked sigchain and profile. Done means a replacement PGP key can be uploaded after revocation and is visible on the webpage and through keybase id.