I'm getting some errors in Remix when trying to implement a token contract that already exists.
The error: "DeclarationError: Undeclared identifier."
I just copied the 10 files and pasted them into the remix. Did I do it right?
In the main file, when compiled, the error appears, as shown below. The others don't show up.
This should've worked. From the information you provided I don't know what failed.
But pay attention to the error message. It should lead you to the cause.
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I found the error happens because the contract files were not correctly listed in Migrations.sol and js in the migration folder.
The same happened with the truffle.
