The attack is coming from your own internal network (192.168......) so probably its not terribly dangerous and in any case the router appears to have blocked it and logged it. But it could also indicate that one of the computers in the network is infected and the resident AV has failed to detect it. Its also possible your router is mistaken and is dropping legit packets.
To be safe, scan your machines with malwarebytes antimalware and maybe also some online virus scanners. After a thorough cleanup, reboot the router.