Muhammad Aamir Khan comments

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                                            Muhammad Aamir Khan

fixing the issue number #4

You can add it manually from any where. here is the liberary just add SafeMath.sol file in contracts and import it in your contract. [SafeMath.sol](https://github.com/pancakeswap/pancake-smart-contracts/blob/master/projects/exchange-protocol/contracts/libraries/SafeMath.sol)

I need to know that what type of data i can pass in uniswapV2Call.

You can send any data so that you can use it later using abi.decode() method. to send data make sure you use abi.encode() function. ```solidity bytes memory data = abi.encode(_tokenToBorrow,...

files are not unlinking if a registered user again registers with avatar and coverImage

i have the same issue but when i console.log() the file i sent to multer. middlware then it was path so i removed the .path andthe problem is solved