https monitor not working

hello

we're running 11.4.1 647 and trying to monitor the pool servers with https monitor

https monitor configured as bellow: GET /login HTTP/1.1\r\nHost: my.website.com\r\nConnection: close\r\n\r\n

when troubleshooting this issue from cli:

[root@Cust-F5:Active:Standalone] config  openssl s_client -connect 172.26.133.213:443 -state
CONNECTED(00000003)
SSL_connect:before/connect initialization
SSL_connect:SSLv2/v3 write client hello A
SSL_connect:error in SSLv2/v3 read server hello A
write:errno=104