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Describe the bug or unexpected behaviour
A clear and concise description of what works not as it is supposed to.

How to reproduce

• Which ClickHouse server version to use
  19.15.4.10

clickhouse-client --host ck003 --query="INSERT INTO my_sdap.dm_user_behavior_events FORMAT Parquet " < /data/dm_user_behavior_events/R2_1_0_0-0_TableSink1

create table

CREATE TABLE my_sdap.dm_user_behavior_events (dt UInt32, user_id UInt32, event_time DateTime CODEC(Delta(4), LZ4), event_attr5 LowCardinality(Nullable(String)),***) ENGINE = ReplicatedMergeTree('/clickhouse/tables/my_sdap/dm_user_behavior_events/{shard}', '{replica}') PARTITION BY event_dt ORDER BY (client_id, event_id, mode, dt, intHash64(user_id)) SAMPLE BY intHash64(user_id) TTL event_time + toIntervalDay(30) SETTINGS index_granularity = 8192

Error message and/or stacktrace
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Code: 349. DB::Exception: Can not insert NULL data into non-nullable column "event_attr5"

Additional context
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