Tor Sandbox problem?

Hi!

On version 15.0.0.9.4 I sometimes and randomly got a message in nyx:
“[ERR] tor_getaddrinfo(): Bug: (Sandbox) failed to get address host! (on Tor 0.4.2.7)”

After upgrading to version 15.0.1.3.4, I always get this message at startup.

Please explain what it means, because I don’t know if it is a reason to bite nails?