工具--》选项--》Nuget包管理器 ,点击清除所有Nuget存储
参考文献:关于VS NuGet包无法更新,设置包源映射无效的问题-CSDN博客
- encountered Unexpected character position parsingencountered unexpected character position encountered unexpected character requests error encountered installing unexpected insufficient encountered unexpected caused function unexpected错误parsing double-quote unexpected character expecting character response时报parsing character multibyte position illegal unexpected character文本 内容 unicodedecodeerror unexpected 39 position