QXcbConnection：无法连接到显示器

Question

1: 1.2738 - G logloss: 1.1181QXcbConnection: Could not connect to display 
fish: Job 1, “python main.py 64 64 --backend="tensorflow"” terminated by signal SIGABRT (Abort)

我在aws ubuntu 16.04机器上运行代码。我安装了qtbase5-dev来引用this。但它仍然存在。有什么想法吗？