A Generative AI Engineer is testing a simple prompt template in LangChain using the code below, but it is getting an error. ```python from langchain.chains import LLMChain from langchain.community.llms import OpenAI from langchain.core.prompts import PromptTemplate prompt_template = "Tell me a {adjective} joke" prompt = PromptTemplate( input_variables=["adjective"], template=prompt_template ) llm = LLMChain(prompt=prompt) llm.generate(["adjective": "funny"]) ``` Assuming the API key was properly defined, what change does the Generative AI Engineer need to make to fix their chain? | Databricks Certified Generative AI Engineer - Associate Quiz - LeetQuiz