# warning w9020 GDAL\_ERROR\_ON\_LIBJPEG

**URL:** <https://community.pix4d.com/t/warning-w9020-gdal-error-on-libjpeg/19380>\
**Category:** PIX4Dmapper\
**Created:** [August 18, 2021, 8:32am UTC](https://community.pix4d.com/t/warning-w9020-gdal-error-on-libjpeg/19380 "2021-08-18T08:32:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ingetopo.gabriel](https://avatars.discourse-cdn.com/v4/letter/i/ecd19e/32.png) [@ingetopo.gabriel](https://community.pix4d.com/u/ingetopo.gabriel)\
**Post date:** [August 18, 2021, 8:32am UTC](https://community.pix4d.com/t/warning-w9020-gdal-error-on-libjpeg/19380/1 "2021-08-18T08:32:45Z")

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Hello,  
We have read multiple comments about those type of error :  
-Warning w9020: GDAL Error \<4\> E:/xxx/Drone/xxx/1\_initial/report/html/dsm\_preview.tif: No such file or directory  
-Warning w9020: GDAL Warning \<1\> libjpeg: Corrupt JPEG data: 311296 extraneous bytes before marker 0xd1 (this warning can be turned as an error by setting GDAL\_ERROR\_ON\_LIBJPEG\_WARNING to TRUE); but for us it impacts our orthomosaic even the process was finished, so could you help us how to resolved this problem please?

Thank you

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**Author:** ![Blaz](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/blaz/32/4344_2.png) [@Blaz](https://community.pix4d.com/u/Blaz)\
**Post date:** [August 25, 2021, 6:44am UTC](https://community.pix4d.com/t/warning-w9020-gdal-error-on-libjpeg/19380/2 "2021-08-25T06:44:18Z")

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Hi @ingetopo.gabriel,  
in most cases the w9020 GDAL errors can be ignored, please see this post for more information:

> [@Warning W9020](https://community.pix4d.com/t/warning-w9020/6061/20):
>
> Hi all, Most of the GDAL errors are just an internal warning that should not affect the processing, so it should not worry you. They are meant mostly for developers and could even be hidden not to cause confusion. For example, the following messages can simply be ignored if you notice them: [Warning]: Warning w9020: GDAL Error \<1\> latitude or longitude exceeded limits [Warning]: Warning w9020: GDAL Error \<4\> ... 1\_initial/report/html/dsm\_preview.tif: No such file or directory … In case th…

You mention that the orthomosaic is affected. Could you give us some more examples and share some screenshots? Did orthomosaic get generated?

Best regards,