run-llama/llama_index · error · ImportError

pandas is required for this function. Please install it with

Error message

pandas is required for this function. Please install it with `pip install pandas`.

What it means

Error "pandas is required for this function. Please install it with `pip install pandas`." thrown in run-llama/llama_index.

Source

Thrown at llama-index-core/llama_index/core/node_parser/relational/base_element.py:372

    def _get_nodes_from_buffer(
        self, buffer: List[str], node_parser: NodeParser
    ) -> List[BaseNode]:
        """Get nodes from buffer."""
        doc = Document(text="\n\n".join(list(buffer)))
        return node_parser.get_nodes_from_documents([doc])

    def get_nodes_from_elements(
        self,
        elements: List[Element],
        node_inherited: Optional[TextNode] = None,
        ref_doc_text: Optional[str] = None,
    ) -> List[BaseNode]:
        """Get nodes and mappings."""
        try:
            import pandas as pd
        except ImportError:
            raise ImportError(
                "pandas is required for this function. Please install it with `pip install pandas`."
            )

        from llama_index.core.node_parser import SentenceSplitter

        node_parser = self.nested_node_parser or SentenceSplitter()

        nodes: List[BaseNode] = []
        cur_text_el_buffer: List[str] = []
        for element in elements:
            if element.type == "table" or element.type == "table_text":
                # flush text buffer for table
                if len(cur_text_el_buffer) > 0:
                    cur_text_nodes = self._get_nodes_from_buffer(
                        cur_text_el_buffer, node_parser
                    )
                    nodes.extend(cur_text_nodes)
                    cur_text_el_buffer = []

View on GitHub (pinned to afd0fef371)

Solutions

1. Install pandas: `pip install pandas`.

When it happens

Trigger: Thrown at llama-index-core/llama_index/core/node_parser/relational/base_element.py:372 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of run-llama/llama_index@afd0fef371 (2026-08-15). Data as JSON: /api/errors/2e1c0a20d3486205. Report an issue: GitHub.