Issue with starting MAJA on Ubuntu 24.04

OTB Chains MAJA
1

Hello, I recently downloaded MAJA to to detect clouds on tiles coming from Copernicus. After sucessfully installing MAJA, starting it led to multiple issues I mostly solved. The last one I’m meeting is a status error 1. I added the error log to my post. The -v (verbose log) option didn’t bring anything.

After some digging, the cause seems to be missing CAMS or DTM files, but being completely new to MAJA, I am not 100% confident on this.

Thanks in advance for any help given!

ErrorLog.txt (1.5 KB)

2

Hello,

Can you provide us the full log and not just the error message ? We can’t really know what missing here.

I understand that you use startmaja, DTM will be download automatically, CAMS data are not mandatory.

Alexandre

3

Here is the full log from before I obtain the error message.

Full_Log.txt (1.9 KB)

4

All seems good for me, can you launch with --verbose and include all the log with the error ?

5

Here is what I find with the –verbose option.

Verbose_Log.txt (4.5 KB)

6

Can you give me the launch command ? Try to launch without the -s SITE option.

7

My first launch command was

/home/username/Bureau/Maja_1.12/build-pkg/install_maja_4.12/bin/startmaja -f folders.txt -t 31UCP -s Lieutest -d 2025-10-13 -e 2025-10-24

I tried following your suggestion, and use the launch command
/home/username/Bureau/Maja_1.12/build-pkg/install_maja_4.12/bin/startmaja -f folders.txt -t 31UCP -d 2025-10-13 -e 2025-10-24

but it still returned the same error log.

8

The error is link to missing python package lxml, It should be package in the maja python env.

Can you tell me what you put in the folders.txt for exeMaja ? It should be /PATH_MAJA/4.12.0/bin/maja

9

That is strange. I remember having installed lxml. I tried installing it again, and starting MAJA still gave me a status error 1.

What I put in folder, wasn’t /PATH_MAJA/4.12.0/bin/maja, but a path to my tiles folder. I also put a copy of the MAJA executable where the path points to. So, there shouldn’t be any path issue.

10

can you give me your folders.txt ? you need to put in exeMaja the maja in 4.12.0/bin/maja.

MAJA use it’s own python package

11

Here is my folders.txt file.

folders.txt (493 Bytes)

12

exeMaja=/home/username/Documents/Test_Tuiles/maja

You need to put maja binarie here : /PATH_MAJA/4.12.0/bin/maja

13

I just tried your fix, and now MAJA doesn’t find numpy. Even using a pip install and retrying to start MAJA doesn’t fix this. Even if MAJA uses it’s own packages, I would be really surprised numpy isn’t among them.

14

can you give me the new launch command, the new folders txt and the full log that you use ?

NUMPY is included in the python env

15

You will find my launch command and the log in the joined txt file. The content of my folders.txt file is below.

[Maja_Inputs]
repWork=/home/username/Documents/Test_Tuiles/repWork
repGipp=/home/username/Documents/Test_Tuiles/repGipp
repMNT=/home/username/Documents/Test_Tuiles/repMNT
repL1 =/home/username/Documents/Test_Tuiles/repL1
repL2 =/home/username/Documents/Test_Tuiles/repL2
exeMaja=/home/username/Bureau/Maja_1.12/build-pkg/install_maja_4.12/bin/maja
repCAMS=/home/username/Documents/Test_Tuiles/repCAMS

[DTM_Creation]
repRAW =$MAJA_TEST_OUTPUT_ROOT/TV_START_MAJA/rawdem
repGSW =$MAJA_TEST_OUTPUT_ROOT/TV_START_MAJA/gsw

Launch_and_Log.txt (8.6 KB)

16

You use conda base environment ? Can you deactivate it and launch startmaja with no env in your terminal ?

I think your base conda env with numpy > 2 interfere with maja python env that use numpy 1.2X

17

I am indeed using Conda. I installed it in the first place to solve dependency issues caused by MAJA.

I still decided to follow your advice, and deactivated Conda. Here is the new error log I am finding.

New_Log.txt (6.3 KB)

18

we make progress, if you have ubuntu you have to install libgdal-dev (osgeo cant found the binding for gdal python)

19

Using pip install does not seem to work for libgdal, libgdal-dev, or osgeo.

20

you need to do apt install libgdal-dev if you are on ubuntu, it’s a linux package