insufficient balance issue with bank account

I have a BOB account and there is money in it, but today when I tried to make a payment, it started showing insufficient balance. I don't know why. I am worried about this because I make payments from it daily and my transactions usually go through, but today despite having money, it is showing insufficient balance. When I checked the balance, it is showing my balance correctly. Has anyone faced a similar situation? If yes, please tell me the cause and solution for this. Also, what is the solution to fix this? Please 🙏🏻