DuckDB dialect parse error: `insert default values`

[denis-komarov]

Fully reproducible code snippet

from sqlglot import parse_one
sql='''insert into t default values returning (c1);'''
parse_one( sql, dialect = 'duckdb' )

Invalid expression / Unexpected token. Line 1, Col: 21.
  insert into t default values returning (c1);

Official Documentation
INSERT Statement

Package Version
sqlglot 27.25.2
sqlglotrs 0.7.2