# Crash debug.log: Empty locations for group GROUP\_SEWER
**URL:** https://discourse.cataclysmdda.org/t/crash-debug-log-empty-locations-for-group-group-sewer/12322
**Category:** The Garage
**Created:** [August 5, 2016, 4:01am UTC](https://discourse.cataclysmdda.org/t/crash-debug-log-empty-locations-for-group-group-sewer/12322 "2016-08-05T04:01:26Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Mattamue](https://discourse.cataclysmdda.org/u/Mattamue)
#### Post date: [August 5, 2016, 4:01am UTC](https://discourse.cataclysmdda.org/t/crash-debug-log-empty-locations-for-group-group-sewer/12322/1 "2016-08-05T04:01:26Z")
Hey folks,
Encountered one of my first crashes in a long time. debug log spit out lots of lines like this one:
18:19:43.31 MAP : src/map.cpp:7194: Empty locations for group GROUP\_SEWER at uniform submap 7,9,-3 global 3451,345,-3
And this one:
18:22:58.11 GAME : GROUP\_ANT: invalid population here: -1.73252e-017
I’m guessing “1.73252e017” isn’t supposed to be a number generated? That’s… -0.0000000000000000173252? A quintillionth?
Oh, this is on 0C 5302 (17059-g8ac27f9)
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### Author:  [@Soyweiser](https://discourse.cataclysmdda.org/u/Soyweiser)
#### Post date: [August 5, 2016, 5:42pm UTC](https://discourse.cataclysmdda.org/t/crash-debug-log-empty-locations-for-group-group-sewer/12322/2 "2016-08-05T17:42:59Z")
Looks like an overflow to me.
No… wait that doesn’t make sense that means the population was 1.73252e-017 -1 or something before. It must be something else. I guess a value that is not properly initialized/loaded/etc.
What kind of locations were in your reality bubble at that time (around 5 map squares around you)?
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### Author:  [@Mattamue](https://discourse.cataclysmdda.org/u/Mattamue)
#### Post date: [August 5, 2016, 10:00pm UTC](https://discourse.cataclysmdda.org/t/crash-debug-log-empty-locations-for-group-group-sewer/12322/3 "2016-08-05T22:00:57Z")
Not sure about structures around. I was rolling along into new area driving with 5 held down. Want able to find again when I re-loaded.
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### Author:  [@Soyweiser](https://discourse.cataclysmdda.org/u/Soyweiser)
#### Post date: [August 6, 2016, 1:57am UTC](https://discourse.cataclysmdda.org/t/crash-debug-log-empty-locations-for-group-group-sewer/12322/4 "2016-08-06T01:57:10Z")
> [@Mattamue](#):
>
> Not sure about structures around. I was rolling along into new area driving with 5 held down. Want able to find again when I re-loaded.
Assuming this was ‘wasn’t’ right?
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### Author:  [@Mattamue](https://discourse.cataclysmdda.org/u/Mattamue)
#### Post date: [August 8, 2016, 1:50pm UTC](https://discourse.cataclysmdda.org/t/crash-debug-log-empty-locations-for-group-group-sewer/12322/5 "2016-08-08T13:50:48Z")
Right, didn’t proofread myself on mobile.