When connecting Claude for Excel error

[keyfire]

Trying to connect Claude For Excel have error:

Claude for Office connection failed (Gateway)
Build: 083dff05658c658260848ce3130e91492e44cef9

Could not reach gateway. Check the URL and your network connection.

Request:
kind: gateway
url: http://localhost:8082
token: free***eecc
authHeader: x-api-key
apiFormat: anthropic

Manifest params:
et: 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
_host_Info: Excel$Win32$16.01$ru-RU$$$$19

Bootstrap response:
(not called)

Raw error:
Failed to fetch (localhost:8082)

And error in log:
2026-04-28 08:15:03.863: INFO: 127.0.0.1:23673 - "OPTIONS /v1/models HTTP/1.1" 405 Method Not Allowed