Crashed when it can't find the day...

[nluetzge]

Hi! This is a really usefull tool. I have no idea about java but I got it to run. I would like to export all my data! Because the offical export does not give me the trackpoints but your program does. However when I try to export more days the program stops with an error at some point looking like this

> Exported 20170622
> Exported 20170621
> Exported 20170902
> Exported 20170903
/Users/nluetzge/Private/moves/elizabeth-master/lib/output/JsonExport.js:26
  fs.writeFile(this.getFilename(day.date), JSON.stringify(day), function(err) {
                                    ^

TypeError: Cannot read property 'date' of undefined

I assume this is because there might not be data for each day and the code does not have a way to deal with this if that happens. Do you think this is fixable? Also it would be great to get json files for a total year instead of one just for each day. Again I don't know much about Java to do this myself.