While working on #376 I stumble upon a weird thing. On that branch when I tried to import this file GarganText_DocsList-nodeId-735.tsv. This is what the Institutes tab looks like. It says that there are 4 Nothing, but that doesn't make sense since there is only one empty cell in the file (F14 of the TSV) so it should be only 1 Nothing, this is weirdly linked to the 3 Nothing in the Source (G21-G23 of the TSV).

You can also notice that the chart is right in the sense that there is only 1 Nothing for Institutes