[tor-relays] «Possible compression bomb» from Authority?

[Tschador]

Hi there,

today I found this warning in the log of my relay
(6A7551EEE18F78A9813096E82BF84F740D32B911):

Jun 03 04:04:33.000 [warn] Possible compression bomb; abandoning stream.
Jun 03 04:04:33.000 [warn] Unable to decompress HTTP body (tried
Zstandard compressed, on Directory connection (client reading) with
199.58.81.140:80).

What does this mean?

Regards