警告：Setoperator而不是SetProduct

Question

有人知道以下意味着什么：

[    0.00] Creating model
WARNING: Extracting subsets for Set Distances_to_I_index_1, which is a
    SetOperator other than a SetProduct.  Returning this set and not
    descending into the set operands.  To descend into this operator, specify
    'subsets(expand_all_set_operators=True)' or to suppress this warning,
    specify 'subsets(expand_all_set_operators=False)'
WARNING: Extracting subsets for Set Distances_to_I_index_1, which is a
    SetOperator other than a SetProduct.  Returning this set and not
    descending into the set operands.  To descend into this operator, specify
    'subsets(expand_all_set_operators=True)' or to suppress this warning,
    specify 'subsets(expand_all_set_operators=False)'
WARNING: Extracting subsets for Set Distances_to_I_index_1, which is a
    SetOperator other than a SetProduct.  Returning this set and not
    descending into the set operands.  To descend into this operator, specify
    'subsets(expand_all_set_operators=True)' or to suppress this warning,
    specify 'subsets(expand_all_set_operators=False)'
WARNING: Extracting subsets for Set Distances_to_I_index_1, which is a
    SetOperator other than a SetProduct.  Returning this set and not
    descending into the set operands.  To descend into this operator, specify
    'subsets(expand_all_set_operators=True)' or to suppress this warning,
    specify 'subsets(expand_all_set_operators=False)'
[    0.03] Applying solver

我有最佳解决方案，但是我应该纠正STH以便警告会驳回吗？