Sen2Cor: "TypeError: Invalid input object: NoneType"

Optical Toolbox sen2cor
#1

Hello everyone!

I’ve looked on the forum for some kind of solution but I haven’t been lucky to find one that would help me resolving the problem.

This is the error message I get when I prompt the command from Windows cmd.exe:

D:\Xander_C\Documents\Tesi\data\S2A_OPER_PRD_MSIL1C>L2A_Process --resolution 10 --GIP_L2A_AC GIP_L2A_AC S2A_OPER_PRD_MSIL1C_PDMC_20160929T000654_R122_V20150820T100016_20150820T100728.SAFE

Sentinel-2 Level 2A Prototype Processor (Sen2Cor), 2.2.1, created: 2016.04.29 started …
Traceback (most recent call last):
File “C:\Program Files\Anaconda2\Scripts\L2A_Process-script.py”, line 9, in
load_entry_point(‘sen2cor==2.2.1’, ‘console_scripts’, ‘L2A_Process’)()
File “C:\Program Files\Anaconda2\lib\site-packages\sen2cor-2.2.1-py2.7.egg\sen2cor\L2A_Process.py”, line 221, in main
result = config.readPreferences()
File “C:\Program Files\Anaconda2\lib\site-packages\sen2cor-2.2.1-py2.7.egg\sen2cor\L2A_Config.py”, line 3258, in readPreferences
xp.export()
File “C:\Program Files\Anaconda2\lib\site-packages\sen2cor-2.2.1-py2.7.egg\sen2cor\L2A_XmlParser.py”, line 161, in export
objectify.deannotate(self._root, xsi_nil=True, cleanup_namespaces=True)
File “lxml.objectify.pyx”, line 1728, in lxml.objectify.deannotate (src\lxml\lxml.objectify.c:24484)
File “cleanup.pxi”, line 49, in lxml.etree.strip_attributes (src\lxml\lxml.etree.c:150012)
File “apihelpers.pxi”, line 63, in lxml.etree._rootNodeOrRaise (src\lxml\lxml.etree.c:15610)
TypeError: Invalid input object: NoneType

Actually the same error is given even if the command used is:

L2A_Process --resolution 10 --GIP_L2A_AC GIP_L2A_AC S2A_OPER_PRD_MSIL1C_PDMC_20160929T000654_R122_V20150820T100016_20150820T100728.SAFE

Has anyone ever got the same errors before?

Thank you,

Alessandro

#2

Hello. Please provide the OS version and the anaconda version that you installed. I can see the Sen2Cor version is 2.2.1, and the error is present using the command, so the SNAP version is not important.

#3

Hi! Thank you for your reply!

I’m working on Windows 10 Build 1607 with Anaconda 4.2.9.
Later I’m testing on CentOS 6.6 with the same Anaconda version and I get another error after few minutes of elaboration (but at least it does something)

Nonetype_Error_Sen2Cor_Cluster.PNG1213×461 21.9 KB

But I think it is some problem with the configuration file… Or at least I hope!

~ Alessandro

#4

Had the same issue today, only in my case the process wouldn’t start at all.

I just went into sen2cor download directory, and I ran the install command again: python setup.py install
Worked for me!
I am using Ubuntu 14.04 x64, just the Sen2Cor tool, without SNAP.

Best,
Ognjen

1 Like
#5

If it happens again, try installing with the older version of Anaconda2 (4.0.0)

#6

Yep, it is still giving the same error on Windows

#7

Sorry, now I see that your problem was with the ozoneContent. Could you please tell me the parameters you used in L2A_GIPP.xml for Aerosol_Type, Mid_Latitude, and Ozone_Content ?

#8

That is the configuration I’m using on both the systems

Aerosol_Type = Auto

Mid_Latitude = Auto

Ozone_Content = 0

#9

That’s it, I had the same problem. Try to specify Aerosol Type and Mid Latitude (doesn’t make much sense, I know).

#10

Hello again,

I’ve tested different configurations on Windows and it still doesn’t even start (but I think I’ll give up on this platform). On the CentOS system it always fails for the “key = columns.get” with any parameters of the Ozone_Content values.

Unfortunatly I can’t change the Anaconda version until the technician is back so I can only wait for now.

Thank you for your support until now,

Alessandro

#11

Hi Alessandro,

Re the windows error: have you tried restarting your computer? I know it’s a stupid question but I had the same issue and after restarting it seems to be fixed (still running so touch wood…)

Regards,
Theo

#12

I think it’s now about the Ozone Content, with me the problem was setting Mid Latitude and Aerosol to AUTO , when you set it like that the above error pops out. Here is my L2A_GIPP.xml (4.1 KB) , working without problems (for now :slight_smile: , because with Sen2Cor you never know).

Cheers,
Ognjen

#13

Tried in conjunction with the new L2A_GIPP.xml provided by @Ognjen but still nothing :<

~Alessandro

#14

I’ve tried your configuration on both the systems butunfortunatly the errors are still the same.

~ Alessandro

#15

Hi guys,
whenever I try to run:
L2A_Process --resolution 10 --GIP_L2A_AC GIP_L2A_AC + directory it returns:

Sentinel-2 Level 2A Prototype Processor (Sen2Cor), 2.3.0, created: 2016.11.18 started ...
file does not exist: C:\Users\FaTHER\Documents\sen2cor\cfg\GIP_L2A_AC

I checked the folder and there is the file L2A_GIPP.xml. Why does he call for GIP_L2A_AC file?
Anyone encountered this? Thanks.

#16

please don’t cross-post over various topics.