Is this a bandwidth-test bug or not?

Bugs
1

I am testing the bandwidth from R1 to R2. On R1 I ran the command "monitor bandwidth-test initiate tcp 10.10.10.2. And on R2 I ran the command “monitor bandwidth-test accept”. And then on R1 the error message “Address family for hostname not supported” appeared. When I ran the command on R1 “iperf -c 10.10.10.2” it runs normally

2

It seems your system is out of date

show version
3

By the way I am using Vyos version 1.4,

4

Which exactly ?
1.5 works fine