今天在生成一个项目的时候,生成报错,错误如下:The current .NET SDK does not support targeting .NET Core 2.1. Either target .NET Core 1.1 or lower, or use a version of the .NET SDK that supports .NET Core 2.1." 使用的最新的visual studio2017 15.7.4. 我电脑上安装了.net core 2.1.100.2.1.1
报错: You are trying to add a non-nullable field 'BookName' to BookInfo without a default; we can't do that (the database needs something to populate existing rows). Please select a fix: 1) Provide a one-off default now (will be set on all existing row
1.selenium去启动IE时,报错: Started InternetExplorerDriver server (32-bit)2.50.0.0Listening on port 24641Only local connections are allowedException in thread "main" org.openqa.selenium.WebDriverException: Unexpected error launching Internet Explorer.
背景: 准备在vulhub复现weblogic反序列化漏洞时报错,环境加载失败准备删除weblogic镜像时报错: unable to delete 7d35c6cd3bcd (must be forced) - image is being used by stopped container f6b1cc729530 root@zhaizewen:/vulhub/weblogic/CVE-2017-10271# docker rmi 7d35c6cd3bcd Error response fr
我已经升级到了最新的版本 安装其他模块过程中出现下面提示,便说明你需要升级pip You are using pip version 10.0.1, however version 21.3.1 is available.You should consider upgrading via the 'python -m pip install --upgrade pip' command 当在下面出现Success,那么恭喜你安装成功. 失败的看这里: 失败的首先可以尝试更换升级指令,例如: py
今天使用FreeMarker生成数据时一直报错,错误信息是“The following has evaluated to null or missing:”,告知我找不到值. 但是我再三确认,这些属性的值都是正常的,也就是说某些原因造成FreeMarker无法读取到这些值.困扰了我将近两个小时后,经过各种尝试后,终于被我发现了原因: FreeMarker读取数据的时候不支持属性名首字母大写(但是支持变量名全大写的属性)!将变量名全部改为小写后,数据就正常生成了. 因为我也只是个初学者(事实上我昨