fix: Incorrect check of the error object's property

[Anon-im]

In this code snippet, there is a check for compilation errors after calling solc.compile. However, the Solidity compiler (solc) returns error objects with a severity field, not type. The severity field can have values "error" or "warning". Therefore, the check should be directed at e.severity instead of e.type.

Due to the incorrect check e.type == "Error", compilation errors may go undetected. This will cause the code to continue executing even in the presence of critical compilation errors, which can lead to unpredictable program behavior, improper deployment of smart contracts, or other serious issues.