Amaroq cannot clear notificiations -- Mastodon API endpoint?

Amaroq gets this error when trying to clear notifications:

Error
Failed to clear notifications with error:
(null)

Request looks like this:

-   Timestamp      Start: 1509316883.379106 0.000000 0.000000
-   Timestamp      Req: 1509316883.379106 0.000000 0.000000
-   ReqStart       47.49.35.242 50539
-   ReqMethod      POST
-   ReqURL         /api/v1/notifications/clear
-   ReqProtocol    HTTP/1.1
-   ReqHeader      Host: social.cheesebsd.com
-   ReqHeader      Content-Type: application/x-www-form-urlencoded
-   ReqHeader      Content-Length: 0
-   ReqHeader      Connection: keep-alive
-   ReqHeader      Accept: */*
-   ReqHeader      User-Agent: DireFloof/1.1.6 (iPhone; iOS 11.1; Scale/2.00)
-   ReqHeader      Accept-Language: en-US;q=1
-   ReqHeader      Authorization: Bearer REDACTED=
-   ReqHeader      Accept-Encoding: br, gzip, deflate
-   ReqHeader      X-Forwarded-For: 47.49.35.242
-   VCL_call       RECV
-   VCL_return     pass
-   VCL_call       HASH
-   VCL_return     lookup
-   VCL_call       PASS
-   VCL_return     fetch
-   Link           bereq 399674 pass
-   Timestamp      Fetch: 1509316883.448636 0.069530 0.069530
-   RespProtocol   HTTP/1.1
-   RespStatus     404
-   RespReason     Not Found
-   RespHeader     server: Cowboy
-   RespHeader     date: Sun, 29 Oct 2017 22:41:23 GMT
-   RespHeader     content-length: 38
-   RespHeader     content-type: application/json; charset=utf-8
-   RespHeader     cache-control: max-age=0, private, must-revalidate
-   RespHeader     x-request-id: vhgjgursh26gpugvjle7o7f0cotu92g6
-   RespHeader     X-Varnish: 399673
-   RespHeader     Age: 0
-   RespHeader     Via: 1.1 varnish (Varnish/5.2)
-   VCL_call       DELIVER
-   VCL_return     deliver
-   Timestamp      Process: 1509316883.448696 0.069590 0.000060
-   RespHeader     Connection: keep-alive
-   Timestamp      Resp: 1509316883.448737 0.069631 0.000041
-   ReqAcct        370 0 370 329 38 367
-   End            

This appears to be another Mastodon API endpoint that is not plumbed.