Due to the redirect from tools.wmflabs.org to toolforge the path gets mangled. The correct path now is https://wpcleaner.toolforge.org/wpcleaner/wpcleaner/digest.txt but the former path redirects to https://wpcleaner.toolforge.org/wpcleaner/digest.txt.
SOLUTION: To properly fix this, you have 2 options:
- delete WPCleaner, download the installer again, and install WPCleaner from scratch
- update the file getdown.txt which is available in the folder where WPCleaner was installed, details below
2 lines have to be modified in it (the one with appbase, and the one with ui.install_error). You should modify them with the following values:
appbase = https://wpcleaner.toolforge.org/wpcleaner/ ... ui.install_error = https://wpcleaner.toolforge.org/