Error if I use scp from same network with python paramiko

[q000p]

If I run python script with scp from dropbear host from same subnet (without gateway) I have error Channel closed. If I use gateway or if I use v2020.79 of dropbear, the problem is absent.
Paramiko log attached
paramerror.log

[q000p]

Logs from dropbear:
root@Decode:~# dropbear -F -E [18096] Nov 13 14:48:32 Failed loading /etc/dropbear/dropbear_rsa_host_key [18096] Nov 13 14:48:32 Failed loading /etc/dropbear/dropbear_dss_host_key [18096] Nov 13 14:48:32 Not backgrounding [18111] Nov 13 14:48:36 Child connection from 192.168.221.120:45278 [18111] Nov 13 14:48:44 Password auth succeeded for 'root' from 192.168.221.120:45278 [18111] Nov 13 14:48:45 Exit (root) from <192.168.221.120:45278>: Failed assertion (common-channel.c:705): `!channel->sent_close' [18096] Nov 13 14:53:19 Early exit: Terminated by signal

[mkj]

Thanks for the Dropbear log, I'll have a look (might be a bit delayed)