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Get human-readable error message for a contract error signature.
​
error_signature
str
required
4-byte error signature (e.g., “0xb0cfa447”)
​
returns
str
required
Human-readable error message, or the signature if not found
def get_error_message(error_signature: str) -> str:
    if not error_signature.startswith('0x'):
        error_signature = f'0x{error_signature}'
    error_signature = error_signature.lower()
    return CONTRACT_ERROR_MESSAGES.get(error_signature, error_signature)