[tor-relays] 404: /tor/keys/fp-sk/print-print not found

[nano]

I haven't looked into this at all yet, thought I would share it here 
first. Both my exit relays [0] received these repeated warnings around 
the same time yesterday:

timestamp [warn] Received http status code 404 ("Not found") from server 
'server1IP:port' while fetching 
"/tor/keys/fp-sk/A1B2C3D4E5F6G7H8I9J0K1L2M3N4O5P6Q7R8S9T0-A1B2C3D4E5F6G7H8I9J0K1L2M3N4O5P6Q7R8S9T0".
timestamp [warn] Received http status code 404 ("Not found") from server 
'server2IP:port' while fetching 
"/tor/keys/fp-sk/A1B2C3D4E5F6G7H8I9J0K1L2M3N4O5P6Q7R8S9T0-A1B2C3D4E5F6G7H8I9J0K1L2M3N4O5P6Q7R8S9T0".
timestamp [warn] Received http status code 404 ("Not found") from server 
'server3IP:port' while fetching 
"/tor/keys/fp-sk/A1B2C3D4E5F6G7H8I9J0K1L2M3N4O5P6Q7R8S9T0-A1B2C3D4E5F6G7H8I9J0K1L2M3N4O5P6Q7R8S9T0".
timestamp [warn] Received http status code 404 ("Not found") from server 
'server4IP:port' while fetching 
"/tor/keys/fp-sk/A1B2C3D4E5F6G7H8I9J0K1L2M3N4O5P6Q7R8S9T0-A1B2C3D4E5F6G7H8I9J0K1L2M3N4O5P6Q7R8S9T0".

Only one timestamp and serverIP was consistent on both relays. All 
fingerprints, however, were consistent on both. Hasn't appeared before 
or since. Anything to worry about? Thanks.

[0] 
https://atlas.torproject.org/#details/799B025E25850A88CD133276301FAFB731C2EA94

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