Keep getting an error every hour "invalid session"

[SquidlyDidly]

wondering why this is coming up,
im having no issues in the log saying whats wrong, it just keeps coming up as invalid session or session ended or something along the lines for any help would be great
#thanks

 

[Kickazz006]

How To Attach A Log [Kick]

it could be your connection, but we wouldn't know w/o a log

 

[Tony]

add an exception in your firewall about Hb