Mac Loop Sxt AC

What is the cause of this loop with mac flag matching
sxt ac HG
Knowing there is no problem with cables or other problem
بدون عنوان.jpg

please post your device configuration, including the bridge settings.

ok man
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ok man
ث.jpg
33.png
44.png

I mean in the menu Interface → Bridge and Interface → Bridge → Ports

ok man
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