Fix string interpolation issues in exception message.

Fixes an issue preventing a meaningful message from being extracted from the result data due to the HexBytes object being printed rather than the bytes which includes the message.

Author: fselmo

newsfragments/2096.bugfix.rst

@@ -0,0 +1 @@
+Hot fix for string interpolation issue with contract function call decoding exception to facilitate extracting a meaningful message from the eth_call response

web3/contract.py

@@ -1524,8 +1524,9 @@ def call_contract_function(
             )
         else:
             msg = (
-                f"Could not decode contract function call {function_identifier} "
-                f"return data {return_data!r} for output_types {output_types}"
+                f"Could not decode contract function call to '{function_identifier}'.\n"
+                f"return data: {return_data}\n"
+                f"output_types: {output_types}"
             )
         raise BadFunctionCallOutput(msg) from e