milvus-lite failed to start at google colab

[MMHRA]

Hi
I've been using milvus on google colab to vectorize some text for a while. today i got the error:
"ERROR:root:Start milvus-lite failed
2025-06-26 10:03:43,951 [ERROR][_create_connection]: Failed to create new connection using: 368e631280a247d7b5c5c279f34fd23d (milvus_client.py:916)"

tried to make it simple, so this is what i ran, but its not working:

!pip install -U pymilvus
from pymilvus import MilvusClient
client = MilvusClient("./milvus_db.db")

The interesting part is that the code works on my machine. i don't know what caused the error.

[junjiejiangjjj]

Problems caused by setting LD_LIBRARY_PATH in Colab can be fixed with the following code

from pymilvus import MilvusClient
import os
os.environ['LD_LIBRARY_PATH'] = '/usr/local/lib/python3.11/dist-packages/milvus_lite/lib:' + os.environ.get('LD_LIBRARY_PATH', '')

client = MilvusClient("./milvus_db.db")

[MMHRA]

@junjiejiangjjj thanks a lot, it solved the aforementioned problem, but i faced another error.

nullable fields in schema is not allowed. i wonder if this is going to be a new rule or there is something that needs to be fixed.

i solved it by setting nullable to False, but in future i might have to set it to True.

the code which produces the error on colab:

!pip install -U pymilvus

from pymilvus import MilvusClient , DataType
import os
os.environ['LD_LIBRARY_PATH'] = '/usr/local/lib/python3.11/dist-packages/milvus_lite/lib:' + os.environ.get('LD_LIBRARY_PATH', '')

client = MilvusClient("./milvus_db.db")
schema = MilvusClient.create_schema()

schema.add_field(
    field_name="id",
    datatype=DataType.INT64,
    is_primary=True,
    auto_id=True,
    description="primary key")

schema.add_field(
    field_name="supplement_urls",
    datatype=DataType.ARRAY,
    element_type=DataType.VARCHAR,
    max_capacity=64,
    max_length=65535,
    nullable=True,
    description="additional links available in news")

client.create_collection(
    collection_name="demo_collection",
    schema=schema,
    enable_dynamic_field=True)

The error:
"code=1100, message=MilvusLite doesn't support nullable: invalid parameter"

[junjiejiangjjj]

Milvus-lite currently only supports bm25, and other new features of milvus 2.5 are not supported