Common runtime issues

Can't start Qt on Linux

This sometimes happens:

qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, webgl, xcb.

Try this:

export QT_DEBUG_PLUGINS=1
pcot

to run the program again, and look at the output. You might see errors like this (I've removed some stuff):

QFactoryLoader::QFactoryLoader() checking directory path "[...]envs/pcot/bin/platforms" ...
Cannot load library [...]/plugins/platforms/libqxcb.so: (libxcb-xinerama.so.0: cannot open shared object file: No such file or directory)
QLibraryPrivate::loadPlugin failed on "...[stuff removed].. (libxcb-xinerama.so.0: cannot open shared object file: No such file or directory)"

If that's the case, install the missing package:

sudo apt install libxcb-xinerama0

That might help. Otherwise, send a message to us with the output from the QT_DEBUG_PLUGINS run and we will investigate.

Conda fails on Windows

I have once seen an error involving OpenSSH not being correctly installed on Windows when the conda create... command was run. This happened toward the end of the installation.

To fix it, I just ran the command again - it installed OpenSSH correctly and I was able to proceed.