Unsolved unbuntu VM QT GTK issue

[s002wjh]

i'm running virtual machine unbuntu 14 with QT 5.1. i'm getting following error

QGtkStyle was unable to detect the current GTK+ theme

[SGaist]

Hi,

How did you install Qt ?

[s002wjh]

@SGaist
i just download it with installer. then run ./qt-opensource-linux i try install on a new VM ubuntu 16. but now i'm getting download error.
had something similar error on my window machine

Cannot download archive http://download.qt.io/online/qtsdkrepository/linux_x64/desktop/qt5_5101_src_doc_examples/qt.qt5.5101.src/5.10.1-0-201802092256tqtc-qt5-everywhere-src-5.10.1.7z: Error transferring http://qtmirror.ics.com/pub/qtproject/online/qtsdkrepository/linux_x64/desktop/qt5_5101_src_doc_examples/qt.qt5.5101.src/5.10.1-0-201802092256tqtc-qt5-everywhere-src-5.10.1.7z - server replied: Forbidden

[SGaist]

Likely a network glitch.