Confusing error message while creating a stream with datetime32(3) 'timezone' for datetime32 has wrong type: UInt64, expected String literal.

[jovezhong]

Proton 1.5.15

create stream a(b datetime32(6));
Code: 43. DB::Exception: Received from localhost:8463. DB::Exception: Parameter #0 'timezone' for datetime32 has wrong type: UInt64, expected String literal. (ILLEGAL_TYPE_OF_ARGUMENT)

create stream a(b datetime32(3));
Code: 43. DB::Exception: Received from localhost:8463. DB::Exception: Parameter #0 'timezone' for datetime32 has wrong type: UInt64, expected String literal. (ILLEGAL_TYPE_OF_ARGUMENT)

create stream b(b datetime(6))
//OK

create stream c(b datetime64(6))
//OK

This text is confusing
'timezone' for datetime32 has wrong type: UInt64, expected String literal