Bedrock example not working

[rjbks]

Describe the bug
The json scrape graph example is not working, both as-is and with the boto3 client as the "client" key. v1.20.1 & 1.20.0-beta.2
To Reproduce
``python
client = boto3.client("bedrock-runtime", region_name="us-west-2")
graph_config = {
"llm": {
"client": client,
"model": "bedrock/anthropic.claude-3-sonnet-20240229-v1:0",
"temperature": 0.0
}
}

************************************************

Create the JSONScraperGraph instance and run it

************************************************

json_scraper_graph = JSONScraperGraph(
prompt="List me all questions and options in the math section, no answers.",
source=json.dumps(items[:3]), # Pass the content of the file, not the file object
config=graph_config
)

result = json_scraper_graph.run()
print(json.dumps(result, indent=4))

Error instancing model: 1 validation error for ChatBedrock
temperature
extra fields not permitted (type=value_error.extra)

TypeError Traceback (most recent call last)
Cell In[98], line 19
9 # ************************************************
10 # Create the JSONScraperGraph instance and run it
11 # ************************************************
13 json_scraper_graph = JSONScraperGraph(
14 prompt="List me all questions and options in the math section, no answers.",
15 source=json.dumps(items[:3]), # Pass the content of the file, not the file object
16 config=graph_config
17 )
---> 19 result = json_scraper_graph.run()
20 print(json.dumps(result, indent=4))

File /opt/anaconda3/envs/med_device/lib/python3.12/site-packages/scrapegraphai/graphs/json_scraper_graph.py:93, in JSONScraperGraph.run(self)
85 """
86 Executes the web scraping process and returns the answer to the prompt.
87
88 Returns:
89 str: The answer to the prompt.
90 """
92 inputs = {"user_prompt": self.prompt, self.input_key: self.source}
---> 93 self.final_state, self.execution_info = self.graph.execute(inputs)
95 return self.final_state.get("answer", "No answer found.")

File /opt/anaconda3/envs/med_device/lib/python3.12/site-packages/scrapegraphai/graphs/base_graph.py:263, in BaseGraph.execute(self, initial_state)
261 return (result["_state"], [])
262 else:
--> 263 return self._execute_standard(initial_state)

File /opt/anaconda3/envs/med_device/lib/python3.12/site-packages/scrapegraphai/graphs/base_graph.py:184, in BaseGraph._execute_standard(self, initial_state)
171 graph_execution_time = time.time() - start_time
172 log_graph_execution(
173 graph_name=self.graph_name,
174 source=source,
(...)
182 exception=str(e)
183 )
--> 184 raise e
185 node_exec_time = time.time() - curr_time
186 total_exec_time += node_exec_time

File /opt/anaconda3/envs/med_device/lib/python3.12/site-packages/scrapegraphai/graphs/base_graph.py:168, in BaseGraph._execute_standard(self, initial_state)
166 with get_openai_callback() as cb:
167 try:
--> 168 result = current_node.execute(state)
169 except Exception as e:
170 error_node = current_node.node_name

File /opt/anaconda3/envs/med_device/lib/python3.12/site-packages/scrapegraphai/nodes/generate_answer_node.py:133, in GenerateAnswerNode.execute(self, state)
127 if len(doc) == 1:
128 prompt = PromptTemplate(
129 template=template_no_chunks_prompt ,
130 input_variables=["question"],
131 partial_variables={"context": doc,
132 "format_instructions": format_instructions})
--> 133 chain = prompt | self.llm_model | output_parser
134 answer = chain.invoke({"question": user_prompt})
136 state.update({self.output[0]: answer})

File /opt/anaconda3/envs/med_device/lib/python3.12/site-packages/langchain_core/runnables/base.py:436, in Runnable.or(self, other)
426 def or(
427 self,
428 other: Union[
(...)
433 ],
434 ) -> RunnableSerializable[Input, Other]:
435 """Compose this Runnable with another object to create a RunnableSequence."""
--> 436 return RunnableSequence(self, coerce_to_runnable(other))

File /opt/anaconda3/envs/med_device/lib/python3.12/site-packages/langchain_core/runnables/base.py:5553, in coerce_to_runnable(thing)
5551 return cast(Runnable[Input, Output], RunnableParallel(thing))
5552 else:
-> 5553 raise TypeError(
5554 f"Expected a Runnable, callable or dict."
5555 f"Instead got an unsupported type: {type(thing)}"
5556 )

TypeError: Expected a Runnable, callable or dict.Instead got an unsupported type: <class 'NoneType'>

**Expected behavior**
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[ygt1qa8]

This problem is solved in 1.20.0-beta.1(#635)
please pip install scrapegraphai==1.20.0-beta.1