Anyone else unable to upload

Looks like we have a repeat of this event: Complete log of an upload attempt.

26/11/2018 18:57:32 | Einstein@Home | [http] HTTP_OP::libcurl_exec(): ca-bundle 'D:\BOINC\ca-bundle.crt'
26/11/2018 18:57:32 | Einstein@Home | [http] HTTP_OP::libcurl_exec(): ca-bundle set
26/11/2018 18:57:32 | Einstein@Home | Started upload of p2030.20170403.G42.55-01.35.S.b2s0g0.00000_2583_1_0
26/11/2018 18:57:32 | Einstein@Home | [http] [ID#4337] Info: Found bundle for host einstein4.aei.uni-hannover.de: 0x44a7c80 [can pipeline]
26/11/2018 18:57:32 | Einstein@Home | [http] [ID#4337] Info: Re-using existing connection! (#4564) with host einstein4.aei.uni-hannover.de
26/11/2018 18:57:32 | Einstein@Home | [http] [ID#4337] Info: Connected to einstein4.aei.uni-hannover.de (130.75.116.34) port 80 (#4564)
26/11/2018 18:57:32 | Einstein@Home | [http] [ID#4337] Sent header to server: POST /EinsteinAtHome/cgi-bin/file_upload_handler_medium HTTP/1.1
26/11/2018 18:57:32 | Einstein@Home | [http] [ID#4337] Sent header to server: Host: einstein4.aei.uni-hannover.de
26/11/2018 18:57:32 | Einstein@Home | [http] [ID#4337] Sent header to server: User-Agent: BOINC client (windows_x86_64 7.13.0)
26/11/2018 18:57:32 | Einstein@Home | [http] [ID#4337] Sent header to server: Accept: */*
26/11/2018 18:57:32 | Einstein@Home | [http] [ID#4337] Sent header to server: Accept-Encoding: deflate, gzip
26/11/2018 18:57:32 | Einstein@Home | [http] [ID#4337] Sent header to server: Content-Type: application/x-www-form-urlencoded
26/11/2018 18:57:32 | Einstein@Home | [http] [ID#4337] Sent header to server: Accept-Language: en_GB
26/11/2018 18:57:32 | Einstein@Home | [http] [ID#4337] Sent header to server: Content-Length: 4648
26/11/2018 18:57:32 | Einstein@Home | [http] [ID#4337] Sent header to server: Expect: 100-continue
26/11/2018 18:57:32 | Einstein@Home | [http] [ID#4337] Sent header to server:
26/11/2018 18:57:32 | Einstein@Home | [http] [ID#4337] Received header from server: HTTP/1.1 100 Continue
26/11/2018 18:57:32 | Einstein@Home | [http] [ID#4337] Info: We are completely uploaded and fine
26/11/2018 18:58:32 | Einstein@Home | [http] [ID#4337] Received header from server: HTTP/1.1 504 Gateway Time-out
26/11/2018 18:58:32 | Einstein@Home | [http] [ID#4337] Received header from server: Server: nginx
26/11/2018 18:58:32 | Einstein@Home | [http] [ID#4337] Received header from server: Date: Mon, 26 Nov 2018 18:58:20 GMT
26/11/2018 18:58:32 | Einstein@Home | [http] [ID#4337] Received header from server: Content-Type: text/html
26/11/2018 18:58:32 | Einstein@Home | [http] [ID#4337] Received header from server: Content-Length: 433
26/11/2018 18:58:32 | Einstein@Home | [http] [ID#4337] Received header from server: Connection: keep-alive
26/11/2018 18:58:32 | Einstein@Home | [http] [ID#4337] Received header from server: ETag: "593ad040-1b1"
26/11/2018 18:58:32 | Einstein@Home | [http] [ID#4337] Received header from server:
26/11/2018 18:58:32 | Einstein@Home | [http] [ID#4337] Info: Connection #4564 to host einstein4.aei.uni-hannover.de left intact
26/11/2018 18:58:33 | Einstein@Home | Temporarily failed upload of p2030.20170403.G42.55-01.35.S.b2s0g0.00000_2583_1_0: transient HTTP error
26/11/2018 18:58:33 | Einstein@Home | Backing off 00:13:21 on upload of p2030.20170403.G42.55-01.35.S.b2s0g0.00000_2583_1_0

Note the 1:00 interval between 'We are completely uploaded and fine' and 'Received header from server: HTTP/1.1 504 Gateway Time-out'.