该方法也有可能找不到日志数据库的位置；这可能是因为在日志中尝试执行代码的结果。
Because of this setup, this method may be unable to find the journal database location; this can be a side effect of trying to execute code in your journal.
执行不到的代码不应当成为代码基的一部分。
这种限制不会阻止您再次单击该按钮时执行代码；仅仅是看不到代码。
This limitation does not prevent their execution when you next click the button; it just prevents you from seeing the code.
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