Я использую R 3.6.3 в Ubuntu 18.04 и получил следующие ошибки о qt.qpa.plugin. Как мне решить проблему? Спасибо.
> library(knitr)
> knit("intro_nlp.Rmd")
processing file: intro_nlp.Rmd
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ordinary text without R code
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label: setup (with options)
List of 1
$ include: logi FALSE
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ordinary text without R code
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label: unnamed-chunk-1 (with options)
List of 2
$ echo : logi FALSE
$ out.width: chr "100%"
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ordinary text without R code
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label: unnamed-chunk-2
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ordinary text without R code
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label: python_setup (with options)
List of 2
$ echo : symbol F
$ message: symbol F
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ordinary text without R code
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label: unnamed-chunk-3 (with options)
List of 1
$ engine: chr "python"
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.
Aborted (core dumped)