The dough does not look, in any way, throughrouly cooked. Enough to have pockets in it where either living or dead yeast is deposited. That is enough to disturb your digestion, either by off-setting the pH in the stomach or by disturbing the intestinal bioma. That was why I said what I said.

Based on the crumb texture in the middle, it doesn't look like it got fully baked I.e. the middle may have never reached safe temp