Idk what to think?!

We recently started solids with my baby , we did rice cereal and she seemed to react just fine. Then we went to bananas and I’ve noticed that she had a diaper rash. We

also had switched to water wipes , she was previously using pampers wipes. My first thought was could it be the wipes ? We stopped bananas and also went back to pampers wipes.

The rash was going away. We started avocados few days later and I see the rash is coming back. Could the rash be because of the solid foods ? Has this happened to anyone else.