I am now planning to export all of my current spaces using multithreading, but it seems that only one space can be exported at a time. I have tracked the error and found that when obtaining the export URL, there is an error as shown in the picture. Is it because he doesn't support exporting multiple spaces simultaneously internally

I am now planning to export all of my current spaces using multithreading, but it seems that only one space can be exported at a time. I have tracked the error and found that when obtaining the export URL, there is an error as shown in the picture. Is it because he doesn't support exporting multiple spaces simultaneously internally