退出页面时applet报错

在页面中嵌入一个applet，打开页面时没有错误，当离开这个页面applet 控制台报错：java.lang.IllegalArgumentException: Width (1) and height (0) cannot be <= 0 at java.awt.image.DirectColorModel.createCompatibleWritableRaster(Unknown Source) at java.awt.image.BufferedImage.<init>(Unknown Source) at sun.awt.windows.WComponentPeer.print(Unknown Source) at sun.awt.windows.WCanvasPeer.print(Unknown Source) at sun.awt.windows.WPanelPeer.print(Unknown Source) at java.awt.GraphicsCallback$PeerPrintCallback.run(Unknown Source) at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source) at java.awt.Component.printAll(Unknown Source) at java.awt.GraphicsCallback$PrintAllCallback.run(Unknown Source) at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source) at sun.awt.SunGraphicsCallback.runComponents(Unknown Source) at java.awt.Container.printComponents(Unknown Source) at sun.awt.windows.WEmbeddedFrame.print(Unknown Source)