Type "vector" does not exist on postgresql - langchain

I was trying to embed some documents on postgresql with the help of pgvector extension and langchain. Unfortunately I'm having trouble with the following error:

(psycopg2.errors.UndefinedObject) type "vector" does not exist
LINE 4:  embedding VECTOR(1536), 
                   ^

[SQL: 
CREATE TABLE langchain_pg_embedding (
    collection_id UUID, 
    embedding VECTOR(1536), 
    document VARCHAR, 
    cmetadata JSON, 
    custom_id VARCHAR, 
    uuid UUID NOT NULL, 
    PRIMARY KEY (uuid), 
    FOREIGN KEY(collection_id) REFERENCES langchain_pg_collection (uuid) ON DELETE CASCADE
)
]

My environment info:

• pgvector docker image ankane/pgvector:v0.4.1
• python 3.10.6, psycopg2 2.9.6, pgvector 0.1.6

List of installed extensions on postgres

  Name   | Version |   Schema   |                Description                 
---------+---------+------------+--------------------------------------------
 plpgsql | 1.0     | pg_catalog | PL/pgSQL procedural language
 vector  | 0.4.1   | public     | vector data type and ivfflat access method

I've tried the following ways to resolve:

1. Fresh installing the Postgres docker image with pgvector extension enabled.
2. Manually install the extension with the official instruction.
3. Manually install the extension on Postgres like the following:

CREATE EXTENSION IF NOT EXISTS vector
    SCHEMA public
    VERSION "0.4.1";

But no luck.