**How to reproduce**
Clickhouse version 21.5

```
cat /etc/clickhouse-server/users.xml
<?xml version="1.0"?>
<yandex>
    <!-- Profiles of settings. -->
    <profiles>
        <!-- Default settings. -->
        <default>
            <data_type_default_nullable>1</data_type_default_nullable>
            <load_balancing>random</load_balancing>
        </default>
....

2021.04.04 01:23:42.453678 [ 29048 ] {} <Error> Application: DB::Exception: Nested type Array(UInt64) cannot be inside Nullable type: Cannot attach table `system`.`crash_log` from metadata file /var/lib/clickhouse/metadata/system/crash_log.sql from query ATTACH TABLE system.crash_log (`event_date` Date, `event_time` DateTime, `timestamp_ns` UInt64, `signal` Int32, `thread_id` UInt64, `query_id` String, `trace` Array(UInt64), `trace_full` Array(String), `version` String, `revision` UInt32, `build_id` String) ENGINE = MergeTree ORDER BY (event_date, event_time) SETTINGS index_granularity = 8192: while loading database `system` from path /var/lib/clickhouse/metadata/system
```
{
public:
    InterpreterCreateQuery(const ASTPtr & query_ptr_, ContextPtr context_);
    BlockIO execute() override;
    
    static ASTPtr formatColumns(const NamesAndTypesList & columns);
    static ASTPtr formatColumns(const ColumnsDescription & columns);
    static ASTPtr formatIndices(const IndicesDescription & indices);
    static ASTPtr formatConstraints(const ConstraintsDescription & constraints);
    void setForceRestoreData(bool has_force_restore_data_flag_)
    {
        has_force_restore_data_flag = has_force_restore_data_flag_;
    }
    void setInternal(bool internal_)
    {
        internal = internal_;
    }
    void setForceAttach(bool force_attach_)
    {
        force_attach = force_attach_;
    }
    
    
    static ColumnsDescription getColumnsDescription(const ASTExpressionList & columns, ContextPtr context, bool sanity_check_compression_codecs);
    static ConstraintsDescription getConstraintsDescription(const ASTExpressionList * constraints);
    static void prepareOnClusterQuery(ASTCreateQuery & create, ContextPtr context, const String & cluster_name);
    void extendQueryLogElemImpl(QueryLogElement & elem, const ASTPtr & ast, ContextPtr) const override;
private:
    struct TableProperties