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nautilus 开机不能启动，桌面初始化失败，错误信息如下：

(nautilus:5919): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed

** (nautilus:5919): WARNING **: No marshaller for signature of signal 'UploadFinished'

** (nautilus:5919): WARNING **: No marshaller for signature of signal 'DownloadFinished'

** (nautilus:5919): WARNING **: No marshaller for signature of signal 'ShareCreateError'

这是怎么回事？