The file index.txt does not exist in this directory. It should contain one-line descriptions of the images here.
1 images
Name                                        Last modified      Size  Description
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../                                        22-Jan-2019 10:30  [DIR]  Parent directory
sri_lanka_14SL_chl_ice_combo_2018-07-06_   29-Aug-2018 09:25   109K  PNG image data, 754 x 935, 8-bit/color RGBA, non-interlaced

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