Executing the FlashLoanArbitrage gives a Gas estimation error

[intervations]

Thanks for the great video walk-through tutorial on YouTube for this.
I am trying the run the arbitrage function with dex contract and always get the following error,

Gas estimation errored with the following message (see below). The transaction execution will likely fail. Do you want to force sending? Returned error: {"jsonrpc":"2.0","error":"execution reverted: Check the token allowance","id":2683750395878379}

Obviously, if I choose to continue it fails like it says it will.
Is this a code problem or a problem with remix.ethereum.org?

I appreciate any advice given on this issue.

[BigGod12]

Hello, were you able to get it fixed, i`m facing same thing for some couples of days now and can not continue anymore, though i have all the necessary token funded for liquidity and even some etha sent to both dex.sol and the arbitrage contract, were you able to get it fixed please??

[intervations]

No. I stepped away from this as a project and am only just getting back to it.
I have had to rebuild my VM environment for this.

[leonidafanas]

Hello! Could You please provide an update on this? Was this error fixed? Once You will rebuild your VM environment - will You tell us what was a problem? Thanks! Just want to continue learning.

[intervations]

Hello! Could You please provide an update on this? Was this error fixed? Once You will rebuild your VM environment - will You tell us what was a problem? Thanks! Just want to continue learning.

Hello. No this was never resolved. No-one who follows this repo seems to have an answer for the issue, not even the author has responded.

For now I have moved on and have forgotten about flashloans unless the question can be answered.

[leonidafanas]

My Arbitrage has finally worked. I think my issue was that I did not replaced 'import' IERC20 in Dex.sol to https://github. Etherscan has shown transactions stamps and balance on my FlashLoanArbitrage.sol is about 110$ just like in author's example. However, now, after my arbitrage could make it just once - when I try to make it work second time - it has that same issue with Gas Estimation Error. I tried to add some liquidity to Dex.sol and seems that both USD and DAI balances are more than enough, but still can's do it second time.

[testmbout]

I have the same question, but when i change the deploy address to "0x0Dc26cC61c1AD92D12804849C58EF90AA1323c33", this address I get from another issue, then it worked well, I think it about the key of quetion