LOOP with same Mikrotik Mac Adress

hello
i have this error
Bridge port received packet with own address as source, probably loop
BTW i use CCR1036
loop.PNG

ether18: bridge port recieved packet with own address as source address (cc:2d:e0:x:x:x), probably loop. using a CRS328 with v6.45.1 any help is welcomed.