Daniel Reetz, the founder of the DIY Book Scanner community, has recently started making videos of prototyping and shop tips. If you are tinkering with a book scanner (or any other project) in your home shop, these tips will come in handy. https://www.youtube.com/channel/UCn0gq8 ... g_8K1nfInQ

Nonetype-Object is not iterable

Johannes Baiter's Spreads and SpreadPi are the latest control systems and postprocessors for DIY scanning. http://spreads.readthedocs.org
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Joined: 13 Oct 2015, 07:16
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Country: Germany

Nonetype-Object is not iterable

Post by TeAge1 » 30 Mar 2016, 13:39

Does anyone here also have that problem? The search-function didn't find anything, but am i really the only one? What does it mean?
When this message comes up, it doesn't work anymore at all and i have to reboot everything.

Have a nice day!
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application log.jpg
application log.jpg (82.73 KiB) Viewed 1648 times

Posts: 346
Joined: 01 Jun 2014, 17:04
Number of books owned: 1000
Country: United States of America

Re: Nonetype-Object is not iterable

Post by duerig » 30 Mar 2016, 15:54

Spreads is relatively fragile and the error-reporting process can be a bit frustrating. Basically this means that something has gone wrong (camera crashed or failed) and some later piece of code was called with an empty object instead of the photo data it was expecting. If you click shutdown and reboot, then Spreads should be happy to continue. Sometimes you can still soldier forward by clicking the end capture button, turning on the camera again after a crash, then clicking capture again on the workflow you want.


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