Library\PackageCache\com.unity.visualscripting@1.5.2\Runtime\VisualScripting.Flow\Dependencies\NCalc\NCalcParser.cs(2647,21): error CS0433: The type 'CommonTree' exists in both 'Antlr3.Runtime, Version=3.5.0.2, Culture=neutral, PublicKeyToken=eb42632606e9261f' and 'Antlr3.Runtime, Version=3.1.3.22795, Culture=neutral, PublicKeyToken=null'
将Library文件夹移动到其他目录，然后重新打开Unity，进行导入。 打开没问题的话，就可以删除Library文件夹了