Unable to borrow ERC20 on Aave

Hello everyone.
I’m new to crypto, but my job duty include development of automated loans application, and I have to interact with Aave.

I’m experimenting with Sepolia testnet and Aave. Yesterday I was able to suppy WETH, approve and borrow ERC20 many times. I tried different small amounts: 5-10 ERC, and everything was working quite good. I have borrowed, maybe 1500-2000 Sepolia ERC20 for all this time. Not many, I think.

Today I started to get errors after sending borrow transaction:
execution reverted: arithmetic underflow or overflow

Is it some hidden limit? Maybe I was banned for borrowing ?
I use different wallets each time for borrowing.

After hours of googling and asking AI chatbots I completely stuck.

Please, give me some clues, how I can debug this situation, what could be the reason.
Sorry for mistakes, English isn’t my native language.

This is tenderly simulation