Place some
{} around the last key/value:
our %hash = (0 => { 0 => [[[1, 0],[2, 0],[3, 0],[4, 0],[5, 0],[6, 0],[
+7, 0]],
[[0, 1],[0, 2],[0, 3],[0, 4],[0, 5],[0, 6],[0, 7]]]});
You need to let the first hashvalue be a scalar, in this case an anonymous hash ref.
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