Compilation Issues about bwtree HOT 1 OPEN

I managed to change the types correctly, but am still running into this error:

In instantiation of ‘std::tuple<long unsigned int, long unsigned int> BwTree::Tree<Key, Data>::getConsolidatedLeafData(BwTree::Node<Key, Data>, std::vector<BwTree::KeyValue<Key, Data> >&) [with Key = unsigned int; Data = unsigned int]’:
/home/mayank/Documents/BW-Trees/src/bwtree.cpp:1126:24: required from here
/home/mayank/Documents/BW-Trees/src/bwtree.cpp:874:42: error: use of deleted function ‘std::array<BwTree::KeyValue<unsigned int, unsigned int>, 100>::array()’
std::array<KeyValue<Key, Data>, 100> deltaInsertRecords;
^~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/7/tuple:39:0,
from /usr/include/c++/7/unordered_map:41,
from /home/mayank/Documents/BW-Trees/src/bwtree.cpp:1:
/usr/include/c++/7/array:94:12: note: ‘std::array<BwTree::KeyValue<unsigned int, unsigned int>, 100>::array()’ is implicitly deleted because the default definition would be ill-formed:
struct array
^~~~~
/usr/include/c++/7/array:94:12: error: no matching function for call to ‘BwTree::KeyValue<unsigned int, unsigned int>::KeyValue()’
In file included from /home/mayank/Documents/BW-Trees/src/bwtree.cpp:9:0:
/home/mayank/Documents/BW-Trees/src/nodes.hpp:52:9: note: candidate: BwTree::KeyValue<Key, Data>::KeyValue(const Key&, const Data const&) [with Key = unsigned int; Data = unsigned int]
KeyValue(const Key &key, const Data const & data) : key(key), data(data) { }
^~~~~~~~
/home/mayank/Documents/BW-Trees/src/nodes.hpp:52:9: note: candidate expects 2 arguments, 0 provided
/home/mayank/Documents/BW-Trees/src/nodes.hpp:48:12: note: candidate: constexpr BwTree::KeyValue<unsigned int, unsigned int>::KeyValue(const BwTree::KeyValue<unsigned int, unsigned int>&)
struct KeyValue {
^~~~~~~~
/home/mayank/Documents/BW-Trees/src/nodes.hpp:48:12: note: candidate expects 1 argument, 0 provided
/home/mayank/Documents/BW-Trees/src/bwtree.cpp: In instantiation of ‘std::tuple<long unsigned int, long unsigned int> BwTree::Tree<Key, Data>::getConsolidatedLeafData(BwTree::Node<Key, Data>, std::vector<BwTree::KeyValue<Key, Data> >&) [with Key = unsigned int; Data = long unsigned int]’:

from bwtree.