ValueError: No valid option generated in #select! Please post a GitHub issue since this should not happen :)

[zxfpro]

I meeting this error when to run examples/classification_skill_with_CoT.ipynb

import pandas as pd
df = pd.DataFrame([
{"text": "Apple product with a sleek design.", "category": "Electronics"},
{"text": "Laptop stand for the kitchen.", "category": "Furniture/Home Decor"},
{"text": "Chocolate leather boots.", "category": "Footwear/Clothing"},
{"text": "Wooden cream for surfaces.", "category": "Furniture/Home Decor"},
{"text": "Natural finish for your lips.", "category": "Beauty/Personal Care"}
])
df

from adala.agents import Agent
from adala.skills import ClassificationSkill

agent = Agent(
skills=ClassificationSkill(
name='product_category_classification',
instructions='Categorize text into different product categories.',
input_template='Text: {text}',
output_template='Thoughts: {thoughts}\n\nClassification: {predicted_class}',
labels={'predicted_class': [
"Footwear/Clothing",
"Electronics",
"Food/Beverages",
"Furniture/Home Decor",
"Beauty/Personal Care"
]},
)
)

agent.run(df)

Applying skill: product_category_classification
60%|████████████████████████████████████ | 3/5 [00:05<00:04, 2.04s/it]
Traceback (most recent call last):
File "/Users/zhaoxuefeng/opt/miniconda3/envs/adala/lib/python3.10/site-packages/guidance/_program_executor.py", line 109, in run
await self.visit(self.parse_tree, VariableStack([self.program._variables], self))
File "/Users/zhaoxuefeng/opt/miniconda3/envs/adala/lib/python3.10/site-packages/guidance/_program_executor.py", line 559, in visit
visited_children.append(await self.visit(child, variable_stack, inner_next_node, inner_next_next_node, inner_prev_node, node, parent_node))
File "/Users/zhaoxuefeng/opt/miniconda3/envs/adala/lib/python3.10/site-packages/guidance/_program_executor.py", line 186, in visit
out = await self.visit(tree, variable_stack)
File "/Users/zhaoxuefeng/opt/miniconda3/envs/adala/lib/python3.10/site-packages/guidance/_program_executor.py", line 559, in visit
visited_children.append(await self.visit(child, variable_stack, inner_next_node, inner_next_next_node, inner_prev_node, node, parent_node))
File "/Users/zhaoxuefeng/opt/miniconda3/envs/adala/lib/python3.10/site-packages/guidance/_program_executor.py", line 266, in visit
visited_children = [await self.visit(child, variable_stack, next_node, next_next_node, prev_node, node, parent_node) for child in node]
File "/Users/zhaoxuefeng/opt/miniconda3/envs/adala/lib/python3.10/site-packages/guidance/_program_executor.py", line 266, in
visited_children = [await self.visit(child, variable_stack, next_node, next_next_node, prev_node, node, parent_node) for child in node]
File "/Users/zhaoxuefeng/opt/miniconda3/envs/adala/lib/python3.10/site-packages/guidance/_program_executor.py", line 379, in visit
command_output = await command_function(*positional_args, **named_args)
File "/Users/zhaoxuefeng/opt/miniconda3/envs/adala/lib/python3.10/site-packages/guidance/library/_select.py", line 177, in select
raise ValueError("No valid option generated in #select! Please post a GitHub issue since this should not happen :)")
ValueError: No valid option generated in #select! Please post a GitHub issue since this should not happen :)

Error in program: No valid option generated in #select! Please post a GitHub issue since this should not happen :)
100%|████████████████████████████████████████████████████████████| 5/5 [00:16<00:00, 4.03s/it]
Traceback (most recent call last):
File "/Users/zhaoxuefeng/opt/miniconda3/envs/adala/lib/python3.10/site-packages/guidance/_program_executor.py", line 109, in run
await self.visit(self.parse_tree, VariableStack([self.program._variables], self))
File "/Users/zhaoxuefeng/opt/miniconda3/envs/adala/lib/python3.10/site-packages/guidance/_program_executor.py", line 559, in visit
visited_children.append(await self.visit(child, variable_stack, inner_next_node, inner_next_next_node, inner_prev_node, node, parent_node))
File "/Users/zhaoxuefeng/opt/miniconda3/envs/adala/lib/python3.10/site-packages/guidance/_program_executor.py", line 186, in visit
out = await self.visit(tree, variable_stack)
File "/Users/zhaoxuefeng/opt/miniconda3/envs/adala/lib/python3.10/site-packages/guidance/_program_executor.py", line 559, in visit
visited_children.append(await self.visit(child, variable_stack, inner_next_node, inner_next_next_node, inner_prev_node, node, parent_node))
File "/Users/zhaoxuefeng/opt/miniconda3/envs/adala/lib/python3.10/site-packages/guidance/_program_executor.py", line 266, in visit
visited_children = [await self.visit(child, variable_stack, next_node, next_next_node, prev_node, node, parent_node) for child in node]
File "/Users/zhaoxuefeng/opt/miniconda3/envs/adala/lib/python3.10/site-packages/guidance/_program_executor.py", line 266, in
visited_children = [await self.visit(child, variable_stack, next_node, next_next_node, prev_node, node, parent_node) for child in node]
File "/Users/zhaoxuefeng/opt/miniconda3/envs/adala/lib/python3.10/site-packages/guidance/_program_executor.py", line 379, in visit
command_output = await command_function(*positional_args, **named_args)
File "/Users/zhaoxuefeng/opt/miniconda3/envs/adala/lib/python3.10/site-packages/guidance/library/_select.py", line 177, in select
raise ValueError("No valid option generated in #select! Please post a GitHub issue since this should not happen :)")
ValueError: No valid option generated in #select! Please post a GitHub issue since this should not happen :)

Error in program: No valid option generated in #select! Please post a GitHub issue since this should not happen :)