Why are `fox3` and `the2` null?

running_it.txt

~/W/z/playground $ zig version
0.6.0+342ba960f
~/W/z/playground $ zig build-exe tfidf.zig
~/W/z/playground $ ./tfidf
word "the" initialized to count 1
after word "the" map count is 1

word "quick" initialized to count 1
after word "quick" map count is 2

word "brown" initialized to count 1
after word "brown" map count is 3

word "fox" initialized to count 1
after word "fox" map count is 4

word "fox" initialized to count 1
after word "fox" map count is 5

word "fox" initialized to count 1
after word "fox" map count is 6

word "jumped" initialized to count 1
after word "jumped" map count is 7

word "over" initialized to count 1
after word "over" map count is 8

word "the" initialized to count 1
after word "the" map count is 9

word "lazy" initialized to count 1
after word "lazy" map count is 10

word "dog" initialized to count 1
after word "dog" map count is 11

fox3 count is null
the2 coutn is null

tfidf.zig

const std = @import("std");
const Allocator = std.mem.Allocator;

const mem = std.mem;
const Map = std.AutoHashMap([]const u8, usize);


pub fn main() !void {
    const allocator = std.heap.page_allocator;
    var map = Map.init(allocator);
    defer map.deinit();
    const phrase = "the quick brown fox fox fox jumped over the lazy dog";
    var it1 = mem.split(phrase, " ");
    while (it1.next()) |word| {
        var result = try map.getOrPut(word);
        if (result.found_existing) {
            result.entry.value += 1;
            std.debug.print("word {s} found with count {d}\n", .{word, result.entry.value});
            result.entry.value += 1;
            std.debug.print("word {s} set to count {d}\n", .{word, result.entry.value});
        } else {
            result.entry.value = 1;
            std.debug.print("word \"{s}\" initialized to count {d}\n", .{word, result.entry.value});
        }
        std.debug.print("after word \"{s}\" map count is {d}\n\n", .{word, map.count()});
    }
    const fox3 = map.get("fox");
    const the2 = map.get("the");
    std.debug.print("fox3 count is {d}\n", .{fox3});
    std.debug.print("the2 coutn is {d}\n", .{the2});
}