Caspar,

This month, and last month, you posted links to .docx files.
There were spaces in the names, to which the URL converted to %20 (hexadecimal, i.e. 32 decimal ASCII, for the character, "space").
Some had too many %20, more than the number of spaces in the actual document name, causing the links to fail.

e.g last week you had:      ILLNESS AND LOSS IN AMERICA 18 JUNE 2021  CELESTIAL TMV

but the URL link had the following in it: 

ILLNESS%20AND%20LOSS%20IN%20%20%20%20%20%20%20%20AMERICA%2018%20JUNE%202021%20CELESTIAL%20TMV.docx

I tried different edits of the URLs, reducing the number of %20, and eventually was able to download your files.
I would highly recommend using either underlines ("_") or periods ("."), instead of spaces, in the your file names.

You could also use dashes ("-"), like your 2nd link, last week, but it still had one "space", between THE and CENTURY, causing the break:

THE-END-OF-THE CENTURY-GREAT-WASTE

the URL link had the following in it: 

THE-END-OF-THE%20%20%20%20%20%20%20%20CENTURY-GREAT-WASTE.docx