ImportError: cannot import name 'PipelineSchemaError' from 'haystack.errors'

[mandar-gite]

from haystack.errors import PipelineSchemaError

ImportError: cannot import name 'PipelineSchemaError' from 'haystack.errors' (/home/mandar/miniconda3/envs/cascade/lib/python3.12/site-packages/haystack/errors.py)

installed packages:
haystack-ai 2.1.1
haystack-bm25 1.0.2

used pip to installed these libraries

[vblagoje]

Hey @mandar-gite where did you find this class PipelineSchemaError - somewhere in docs? haystack-ai 2.1.1 doesn't have such a class

[mandar-gite]

Hi @vblagoje
Here goes the error
(cascade) /media/F/machine_learning/cascade/lfqa git:[main]
python lfqa_rag_model.py
Traceback (most recent call last):
File "/media/F/machine_learning/cascade/lfqa/lfqa_rag_model.py", line 6, in
from doc_retriever import get_text_embedder, get_retriever
File "/media/F/machine_learning/cascade/lfqa/doc_retriever.py", line 3, in
from haystack.document_stores.opensearch import OpenSearchDocumentStore
File "/home/mandar/miniconda3/envs/cascade/lib/python3.12/site-packages/haystack/document_stores/opensearch.py", line 11, in
from haystack.document_stores.filter_utils import LogicalFilterClause
File "/home/mandar/miniconda3/envs/cascade/lib/python3.12/site-packages/haystack/document_stores/filter_utils.py", line 6, in
from haystack.document_stores.utils import convert_date_to_rfc3339
File "/home/mandar/miniconda3/envs/cascade/lib/python3.12/site-packages/haystack/document_stores/utils.py", line 9, in
from haystack.nodes.preprocessor import PreProcessor
File "/home/mandar/miniconda3/envs/cascade/lib/python3.12/site-packages/haystack/nodes/init.py", line 1, in
from haystack.nodes.base import BaseComponent
File "/home/mandar/miniconda3/envs/cascade/lib/python3.12/site-packages/haystack/nodes/base.py", line 11, in
from haystack.errors import PipelineSchemaError
ImportError: cannot import name 'PipelineSchemaError' from 'haystack.errors' (/home/mandar/miniconda3/envs/cascade/lib/python3.12/site-packages/haystack/errors.py)

[mandar-gite]

`## Retrieves best matching documents from the document store

from haystack_integrations.document_stores.opensearch import OpenSearchDocumentStore
from haystack_integrations.components.retrievers.opensearch import OpenSearchEmbeddingRetriever
from haystack.components.embedders import SentenceTransformersTextEmbedder, SentenceTransformersDocumentEmbedder
from haystack import Pipeline

from docstore import get_embedding_model

document_store = OpenSearchDocumentStore(
host="localhost",
port="9200",
username="admin",
password="Portex@5326",
index="document",
scheme="http",
verify_certs=False
)

embedding_model = get_embedding_model()
text_embedder = SentenceTransformersTextEmbedder(model=embedding_model)
retriever = OpenSearchEmbeddingRetriever(document_store=document_store)

def get_retriever():
return OpenSearchEmbeddingRetriever(document_store=document_store)

def get_text_embedder():
return text_embedder

def retrieve(query):
query_pipeline = Pipeline()
query_pipeline.add_component("text_embedder", SentenceTransformersTextEmbedder(model=embedding_model))
query_pipeline.add_component("retriever", OpenSearchEmbeddingRetriever(document_store=document_store))
query_pipeline.connect("text_embedder.embedding", "retriever.query_embedding")

result = query_pipeline.run({"text_embedder": {"text": query}})
result_doc = result['retriever']['documents'][0] 
print(result_doc)

return result_doc

retrieve('')`

gives the error
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�[0;31mImportError�[0m: cannot import name 'PipelineSchemaError' from 'haystack.errors' (/media/F/machine_learning/cascade_1.2/cascade_1.2_venv/lib/python3.10/site-packages/haystack/errors.py)

[vblagoje]

@mandar-gite this is haystack 1.x and it could be that you have somehow installed both old and new haystack. Please start with a clean new env and report back.

[AayushSalvi]

I'm getting the same error on my base env so I created a separate env and installed the following requirements cause I needed it for my project and still got the same error

Requirements :- farm-haystack
fastapi
uvicorn
farm-haystack[weaviate]
pypdf
torch
sentence_transformers
haystack-ai

Error :- ImportError: cannot import name 'PipelineSchemaError' from 'haystack.errors'

Please Suggest what do I do

[mandar-gite]

Yeah , It worked fine after i completely shifted to haystack ai. Thank you!