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```    exporters:
      clickhousetraces:
        datasource: tcp://${CLICKHOUSE_HOST}:${CLICKHOUSE_PORT}/?database=${CLICKHOUSE_TRACE_DATABASE}&amp;username=${CLICKHOUSE_USER}&amp;password=${CLICKHOUSE_PASSWORD}```

```* '' has invalid keys: low_cardinal_exception_grouping
2023/05/10 18:43:03 application run finished with error: failed to get config: cannot unmarshal the configuration: 1 error(s) decoding:```

This is happend at `signoz-otel-collector`

`drop database signoz_logs on cluster cluster`

Why would dropping logs db resolve the error with traces exporter?