The ERC1155 uri format cannot be customized or invoked within contracts that inherit from ERC1155

[ookvic]

The ERC1155 uri format cannot be customized or invoked within contracts that inherit from ERC1155

function uri(uint256) external view virtual override returns (string memory) { return _uri; }
uri methods cannot be called internally ,
It is recommended to use public modifiers, The following code:
function uri(uint256) public view virtual override returns (string memory) { return _uri; }

[Amxx]

Hello,
This issue was addressed in #2576 and is part of the ^4.0 releases.