[Mailman-Users] Strange error log entries?

[Caesar Samsi]

Hi there,

I see the following entries in errors log file:

Aug 29 22:38:29 2016 (31253) confirm: No such list "seattlegigs&quot": 
Aug 31 03:51:19 2016 (15369) admin: No such list "images": 

Sep 01 12:11:59 2016 (1420) confirm: No such list "seattlegigs&quot": 
Sep 03 07:47:55 2016 (26274) admin: No such list "images”: 

Where is it coming from? and how can I fix them?

version 2.1.23

Thanks, Caesar.