vsftp ssl enable cause error when connecting

Hi,

today , after run update , my vsftp (ssl enable ) giving error when connecting

the error throw by filezilla

GnuTLS error -15: An unexpected TLS packet was received.

is there any special setting i need to enable in order to work?

:’(:’(

for testing . I create 2 vm on vbox

vm1 , I install with openSUSE-Tumbleweed-DVD-x86_64-Snapshot20160307-Media

vm2 , i install with openSUSE-Tumbleweed-DVD-x86_64-Snapshot20160512-Media

after install vsftp and apply same setting on vsftpd.conf as i usual did, I test with filezilla

vm1 -> work
vm2 -> error “GnuTLS error -15: An unexpected TLS packet was received”

after I run zypper up on vm1 , I test connect again with filezilla . it give same error “GnuTLS error -15: An unexpected TLS packet was received”

is this problem with filezilla or vsftp? or is there new setting must enable ?