Why is MC crashing

MapLike[{"replace":false,"values":["snowmercy:snowy_taiga","snowmercy:snowy_plains","snowmercy:ice_spikes","snowmercy:grove","snowmercy:snowy_slopes","snowmercy:frozen_peaks"]}]; No key spawners in MapLike[{"replace":false,"values":["snowmercy:snowy_taiga","snowmercy:snowy_plains","snowmercy:ice_spikes","snowmercy:grove","snowmercy:snowy_slopes","snowmercy:frozen_peaks"]}]; No key features in MapLike[{"replace":false,"values":["snowmercy:snowy_taiga","snowmercy:snowy_plains","snowmercy:ice_spikes","snowmercy:grove","snowmercy:snowy_slopes","snowmercy:frozen_peaks"]}]; No key carvers in MapLike[{"replace":false,"values":["snowmercy:snowy_taiga","snowmercy:snowy_plains","snowmercy:ice_spikes","snowmercy:grove","snowmercy:snowy_slopes","snowmercy:frozen_peaks"]}]; No key effects in MapLike[{"replace":false,"values":["snowmercy:snowy_taiga","snowmercy:snowy_plains","snowmercy:ice_spikes","snowmercy:grove","snowmercy:snowy_slopes","snowmercy:frozen_peaks"]}]; No key downfall in MapLike[{"replace":false,"values":["snowmercy:snowy_taiga","snowmercy:snowy_plains","snowmercy:ice_spikes","snowmercy:grove","snowmercy:snowy_slopes","snowmercy:frozen_peaks"]}]; No key temperature in MapLike[{"replace":false,"values":["snowmercy:snowy_taiga","snowmercy:snowy_plains","snowmercy:ice_spikes","snowmercy:grove","snowmercy:snowy_slopes","snowmercy:frozen_peaks"]}]; No key precipitation in MapLike[{"replace":false,"values":["snowmercy:snowy_taiga","snowmercy:snowy_plains","snowmercy:ice_spikes","snowmercy:grove","snowmercy:snowy_slopes","snowmercy:frozen_peaks"]}]