Three fires in one night!

My Sims had really bad night. There is this fireplace in one of my Sims bedrooms.  In front of it is coffee table with a plant. Then there  are two rocking chairs. The fireplace is fully upgraded and until that night I had no issue with it. This night, however, just when my Sims went to sleep, fire started. And, of course, none of the five Sims in my house could sleep through that. Fortunately, I have sprinklers, so the damage was small. But I still had to replace the plant, which was annoying and cost me money. Just as my Sims calmed down and went back to sleep, another fire started. I thought it's the plant, so, I sold it and left the table empty. But just as soon as my Sims went sleep, another fire started. And this time, it was the table that caught fire. After that, I finally remembered to turn off the auto-flame and that helped. I also moved the table, which I had to replace, so more money, to be further away from the fireplace.

But I still don't understand why this happened now. My Sims lived in that house for quite some time and were sleeping in that room with auto-flame every night and there were no issues until that very night. I didn't change anything in that room before that night and I also did not change any of my mods before that gameplay. None of my Sims have bad luck and none of them have fear of fire.

After that, I did the game repair in EA App. But I am still reluctant to turn the auto-flame on for that fireplace.

Does anyone have any idea what may have happened and what may cause this sudden firepocalyple? Because I have no idea.