When you start solids it is important to also start some water as this will aid in digestion. It is possible that the baby is constipated and you may want to work with other starter foods like fruits and veggies first to add more fibre and ease the stools.

If she is urinating well should be fine else she might be constipated. Raisins soaked and water given helps. Already jaggery and ghee could help if added in food