我正在尝试建立一个新的react-admin控制台（遵循官方教程：https://marmelab.com/react-admin/Tutorial.html）。当前版本的react-admin是3.3.1。
但是当执行命令using System.Drawing;
using System.Drawing.Imaging;
using System.Runtime.InteropServices;
using System.Windows.Forms;
public class WebBrowserExtender
{
public static Bitmap DrawContent(WebBrowser browser)
{
if (browser.Document == null) return null;
Size docSize = Size.Empty;
Graphics g = null;
var hDc = IntPtr.Zero;
try {
docSize.Height = (int)((dynamic)browser.Document.DomDocument).documentElement.scrollHeight;
docSize.Width = (int)((dynamic)browser.Document.DomDocument).documentElement.scrollWidth;
var screenWidth = Screen.FromHandle(browser.Handle).Bounds.Width;
docSize.Width = Math.Max(Math.Min(docSize.Width, screenWidth), 1);
docSize.Height = Math.Max(Math.Min(docSize.Height, 32750), 1);
var previousSize = browser.ClientSize;
browser.ClientSize = new Size(docSize.Width, docSize.Height);
var bitmap = new Bitmap(docSize.Width, docSize.Height, PixelFormat.Format32bppArgb);
g = Graphics.FromImage(bitmap);
var rect = new RECT(0, 0, bitmap.Width, bitmap.Height);
hDc = g.GetHdc();
var view = browser.ActiveXInstance as IViewObject;
view.Draw(1, -1, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, hDc, ref rect, IntPtr.Zero, IntPtr.Zero, 0);
browser.ClientSize = previousSize;
return bitmap;
}
catch {
// This catch block is like this on purpose: nothing to do here
return null;
}
finally {
if (hDc != null) g?.ReleaseHdc(hDc);
g?.Dispose();
}
}
[ComImport]
[Guid("0000010D-0000-0000-C000-000000000046")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
interface IViewObject
{
void Draw(uint dwAspect, int lindex, IntPtr pvAspect, [In] IntPtr ptd,
IntPtr hdcTargetDev, IntPtr hdcDraw, ref RECT lprcBounds,
[In] IntPtr lprcWBounds, IntPtr pfnContinue, uint dwContinue);
}
[StructLayout(LayoutKind.Sequential, Pack = 4)]
struct RECT
{
public int Left;
public int Top;
public int Right;
public int Bottom;
public RECT(int left, int top, int width, int height)
{
Left = left; Top = top; Right = width; Bottom = height;
}
}
}
时，发生以下错误：
yarn start我该怎么办？
答案 0 :(得分：3)
删除纱线锁/卷装锁和class SomeMiddleware(object):
def resolve(self, next, root, info, **args):
next_node = next(root, info, **args)
...logic...
return next_node
。
根据此thread
问题来自重复的Redux软件包，来自重复的 react-admin依赖关系，来自过时的数据提供者 （设计用于2.9，而react-admin在3.x中）。升级您的 数据提供者，或将react-admin降级到2.9。
答案 1 :(得分：0)
将您的 react-redux 更新到最新版本。就我而言，我更新到 7.2.4
npm install react-redux@latest
或
npm install react-redux@7.2.4