Expected primary expression.

An expected primary expression is an error message that occurs when a programming language compiler encounters a syntax error in the code. It indicates that the compiler was expecting a valid primary expression, such as a variable, constant, or literal value, but instead encountered an unexpected token or symbol. This error can occur in various programming languages, including C++, Java, Python, and JavaScript, and typically requires the programmer to review the code and correct the syntax error in order to resolve the issue.

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expected primary expression.

"expected primary expression" 的意思是 "期望主要表达式"，通常是编程语言中的错误提示，表示在代码中缺少了必要的主要表达式。这可能是由于语法错误、拼写错误、缺少分号等问题引起的。需要仔细检查代码，找出并修复错误。

AnonymousVoting.sol:729:7: Error: Expected primary expression. enum State { NOT_STARTED, IN_PROGRESS, FINISHED }; ^

这个错误是因为在枚举类型声明的结尾处添加了分号`;`，这是不正确的语法。枚举类型声明应该像下面这样：

enum State { NOT_STARTED, IN_PROGRESS, FINISHED }
State public state;

在这里，我们声明了一个名为`State`的枚举类型，并且我们没有在枚举类型声明的结尾处添加分号。然后，我们声明了一个名为`state`的公共状态变量，该变量的类型为`State`。

请注意，枚举类型声明应以大括号`{}`结束，而不是分号`;`。如果还有其他错误，请检查您的代码是否有其他语法错误。