langchain/callbacks/tracers/stdout.py/ConsoleCallbackHandler/_on_tool_error
class ConsoleCallbackHandler:    def _on_tool_error(self, run: Run) -> None:
        crumbs = self.get_breadcrumbs(run)
        print(
            f"{get_colored_text('[tool/error]', color='red')} "
            + get_bolded_text(f"[{crumbs}] [{elapsed(run)}] ")
            + f"Tool run errored with error:\n"
            f"{run.error}"
        )