Your chart has no X values, for one thing. For another, some of the "blank" cells have a zero in them, but the display options for the worksheet are not to show zeros in cells with zero values. Also, column A has labels for some rows which are "hidden" by using white font color. All of these make it hard to track down issues. Especially the white font.
In general, if you have gaps in the data, you will get gaps in the chart.
You could turn BB101:B149 into a Table using Ctrl+T, then filter one of the columns W1, W2, or W3 so that you do not display blanks. This will make the blanks in the chart disappear.