Tencent plus friends need to enter the verification code but display a red cross. Some signature documents of Baidu Post Bar also show a cross. Tencent search bar part of the avatar also shows a red cross. It is caused by the low version of flash on the computer. It is recommended to replace the latest flash plug-in:

Click "Start"-"Control Panel"-"Add and Remove Programs" in the lower left corner of the computer, and click the original flash plug-in to delete it. Then download and install the flash plug-in. And check whether the computer browser has the shielding setting of flash animation: open the computer browser (click the tool on the upper right-"Internet Options-Advanced-Multimedia" to see if the corresponding option is checked; Or click "Restore Default Settings →" OK "), save and restart the computer to try.

In the meantime, please clear the browser cache: