Error parsing input keys for MergeAnswers: No state keys matched the expression.

[Jeffhaha]

when I try to run to result = xml_scraper_graph.run() from the xml_scraper_multi_graph_groq in example. I got always error paring input for MergeAnsers:No state keys...
Full error info in beneath:
ValueError Traceback (most recent call last)
File /opt/anaconda3/envs/langraph/lib/python3.12/site-packages/scrapegraphai/nodes/base_node.py:111, in BaseNode.get_input_keys(self, state)
110 try:
--> 111 input_keys = self._parse_input_keys(state, self.input)
112 self._validate_input_keys(input_keys)

File /opt/anaconda3/envs/langraph/lib/python3.12/site-packages/scrapegraphai/nodes/base_node.py:234, in BaseNode._parse_input_keys(self, state, expression)
233 if not result:
--> 234 raise ValueError("No state keys matched the expression.")
236 # Remove redundant state keys from the result, without changing their order

ValueError: No state keys matched the expression.

During handling of the above exception, another exception occurred:

ValueError Traceback (most recent call last)
Cell In[9], line 1
----> 1 result = multiple_search_graph.run()

File /opt/anaconda3/envs/langraph/lib/python3.12/site-packages/scrapegraphai/graphs/json_scraper_multi_graph.py:119, in JSONScraperMultiGraph.run(self)
112 """
113 Executes the web scraping and searching process.
114
115 Returns:
116 str: The answer to the prompt.
117 """
118 inputs = {"user_prompt": self.prompt, "jsons": self.source}
--> 119 self.final_state, self.execution_info = self.graph.execute(inputs)
121 return self.final_state.get("answer", "No answer found.")

File /opt/anaconda3/envs/langraph/lib/python3.12/site-packages/scrapegraphai/graphs/base_graph.py:260, in BaseGraph.execute(self, initial_state)
258 return (result["_state"], [])
259 else:
--> 260 return self._execute_standard(initial_state)

File /opt/anaconda3/envs/langraph/lib/python3.12/site-packages/scrapegraphai/graphs/base_graph.py:181, in BaseGraph._execute_standard(self, initial_state)
168 graph_execution_time = time.time() - start_time
169 log_graph_execution(
170 graph_name=self.graph_name,
171 source=source,
(...)
179 exception=str(e)
180 )
--> 181 raise e
182 node_exec_time = time.time() - curr_time
183 total_exec_time += node_exec_time

File /opt/anaconda3/envs/langraph/lib/python3.12/site-packages/scrapegraphai/graphs/base_graph.py:164, in BaseGraph._execute_standard(self, initial_state)
162 with get_openai_callback() as cb:
163 try:
--> 164 result = current_node.execute(state)
165 except Exception as e:
166 error_node = current_node.node_name

File /opt/anaconda3/envs/langraph/lib/python3.12/site-packages/scrapegraphai/nodes/merge_answers_node.py:69, in MergeAnswersNode.execute(self, state)
66 self.logger.info(f"--- Executing {self.node_name} Node ---")
68 # Interpret input keys based on the provided input expression
---> 69 input_keys = self.get_input_keys(state)
71 # Fetching data from the state based on the input keys
72 input_data = [state[key] for key in input_keys]

File /opt/anaconda3/envs/langraph/lib/python3.12/site-packages/scrapegraphai/nodes/base_node.py:115, in BaseNode.get_input_keys(self, state)
113 return input_keys
114 except ValueError as e:
--> 115 raise ValueError(f"Error parsing input keys for {self.node_name}: {str(e)}")

ValueError: Error parsing input keys for MergeAnswers: No state keys matched the expression.

[VinciGit00]

please update to the new version