InfinityEmbeddingsLocal: `TypeError: Object of type ndarray is not JSON serializable`

[amotl]

Problem

When using langchain_community.embeddings.InfinityEmbeddingsLocal with the vector_search.py example, the program trips like this.

  File "/path/to/python3.12/site-packages/crate/client/http.py", line 107, in default
    return json.JSONEncoder.default(self, o)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/python@3.12/3.12.8/Frameworks/Python.framework/Versions/3.12/lib/python3.12/json/encoder.py", line 180, in default
    raise TypeError(f'Object of type {o.__class__.__name__} '
TypeError: Object of type ndarray is not JSON serializable

Python Traceback

Traceback (most recent call last):
  File "/path/to/langchain-cratedb/examples/basic/vector_infinity.py", line 90, in <module>
    main()
  File "/path/to/langchain-cratedb/examples/basic/vector_infinity.py", line 85, in main
    docs = vector_store.similarity_search(query)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/python3.12/site-packages/langchain_postgres/vectorstores.py", line 943, in similarity_search
    return self.similarity_search_by_vector(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/python3.12/site-packages/langchain_postgres/vectorstores.py", line 1498, in similarity_search_by_vector
    docs_and_scores = self.similarity_search_with_score_by_vector(
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/langchain-cratedb/langchain_cratedb/vectorstores/main.py", line 454, in similarity_search_with_score_by_vector
    return self._results_to_docs_and_scores(results)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/langchain-cratedb/langchain_cratedb/vectorstores/main.py", line 379, in _results_to_docs_and_scores
    for result in results
                  ^^^^^^^
  File "/path/to/python3.12/site-packages/sqlalchemy/orm/query.py", line 2813, in __iter__
    result = self._iter()
             ^^^^^^^^^^^^
  File "/path/to/python3.12/site-packages/sqlalchemy/orm/query.py", line 2827, in _iter
    result: Union[ScalarResult[_T], Result[_T]] = self.session.execute(
                                                  ^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/python3.12/site-packages/sqlalchemy/orm/session.py", line 2362, in execute
    return self._execute_internal(
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/python3.12/site-packages/sqlalchemy/orm/session.py", line 2247, in _execute_internal
    result: Result[Any] = compile_state_cls.orm_execute_statement(
                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/python3.12/site-packages/sqlalchemy/orm/context.py", line 305, in orm_execute_statement
    result = conn.execute(
             ^^^^^^^^^^^^^
  File "/path/to/python3.12/site-packages/sqlalchemy/engine/base.py", line 1418, in execute
    return meth(
           ^^^^^
  File "/path/to/python3.12/site-packages/sqlalchemy/sql/elements.py", line 515, in _execute_on_connection
    return connection._execute_clauseelement(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/python3.12/site-packages/sqlalchemy/engine/base.py", line 1640, in _execute_clauseelement
    ret = self._execute_context(
          ^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/python3.12/site-packages/sqlalchemy/engine/base.py", line 1846, in _execute_context
    return self._exec_single_context(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/python3.12/site-packages/sqlalchemy/engine/base.py", line 1986, in _exec_single_context
    self._handle_dbapi_exception(
  File "/path/to/python3.12/site-packages/sqlalchemy/engine/base.py", line 2358, in _handle_dbapi_exception
    raise exc_info[1].with_traceback(exc_info[2])
  File "/path/to/python3.12/site-packages/sqlalchemy/engine/base.py", line 1967, in _exec_single_context
    self.dialect.do_execute(
  File "/path/to/python3.12/site-packages/sqlalchemy_cratedb/dialect.py", line 240, in do_execute
    result = cursor.execute(statement, parameters)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/python3.12/site-packages/crate/client/cursor.py", line 57, in execute
    self._result = self.connection.client.sql(
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/python3.12/site-packages/crate/client/http.py", line 478, in sql
    data = _create_sql_payload(stmt, parameters, bulk_parameters)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/path/to/python3.12/site-packages/crate/client/http.py", line 337, in _create_sql_payload
    return json.dumps(data, cls=CrateJsonEncoder)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/python@3.12/3.12.8/Frameworks/Python.framework/Versions/3.12/lib/python3.12/json/__init__.py", line 238, in dumps
    **kw).encode(obj)
          ^^^^^^^^^^^
  File "/usr/local/Cellar/python@3.12/3.12.8/Frameworks/Python.framework/Versions/3.12/lib/python3.12/json/encoder.py", line 200, in encode
    chunks = self.iterencode(o, _one_shot=True)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/python@3.12/3.12.8/Frameworks/Python.framework/Versions/3.12/lib/python3.12/json/encoder.py", line 258, in iterencode
    return _iterencode(o, 0)
           ^^^^^^^^^^^^^^^^^
  File "/path/to/python3.12/site-packages/crate/client/http.py", line 107, in default
    return json.JSONEncoder.default(self, o)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/python@3.12/3.12.8/Frameworks/Python.framework/Versions/3.12/lib/python3.12/json/encoder.py", line 180, in default
    raise TypeError(f'Object of type {o.__class__.__name__} '
TypeError: Object of type ndarray is not JSON serializable