Don't use any ~/.wgetpaste.d/wgetpaste.conf.
# whatever XXX, always receive nothing
$ hello | wgetpaste -s XXX
Apparently nothing was received. Perhaps the connection failed. Enable --verbose or
--debug to get the output from wget that can help diagnose it correctly.
$ hello | wgetpaste --debug 2>&1 | tee a.log > /dev/null
a.log