Component not connected,

my sub domain is in secure domain , debian 10 , jvb 2 , prosody 11.5

after all update and tips and tricks, i still have this, every minutes in prosody log

Apr 02 12:57:42      warn    Component not connected, bouncing error for: <iq from='' type='get' id='Zj4Rs-86
65' to=''>

any idea ?