MAJA: ERROR - First backward processing was unsuccessful, check MAJA installation

I ran start_maja.py for a while and it seems like the first date seems to be processed successfully (I got the processed TIFs for the first date), but then I got an error before starting on the second image: 2019-05-09 18:46:11,809 - Start-Maja - ERROR - First backward processing was unsuccessful, check MAJA installation .

When I check the log in the ouput directory I did find a GDAL error occuring several times at the end of the file, but I am not sure if this is the cause of the exit:

2019-05-10T09:18:51.621064 ip-172-31-2-35 maja-processing-3.2.2 3.2 [000000024200] [D]  => Caching with file name vns_caching_TOAReader5.tif run in 2.8 minutes.  [vnsSentinel2L1ImageFileReaderBase.txx:GenerateTOACaching:490]
2019-05-10T09:18:51.723171 ip-172-31-2-35 maja-processing-3.2.2 3.2 [000000024200] [D] Caching the </home/ubuntu/efs/Start-MAJA/tmp/site_name/T33VWC/GIPP_001/in/S2B_MSIL1C_20181024T102059_N0206_R065_T33VWC_20181024T160131.SAFE/GRANULE/L1C_T33VWC_A008528_20181024T102428/IMG_DATA/T33VWC_20181024T102059_B05.jp2> image filename...  [vnsSentinel2L1ImageFileReaderBase.txx:GenerateTOACaching:477]
2019-05-10T09:18:51.723212 ip-172-31-2-35 maja-processing-3.2.2 3.2 [000000024200] [D] Reflectance quantification value : 0.0001  [vnsSentinel2L1ImageFileReaderBase.txx:GenerateTOACaching:478]
2019-05-10T09:18:51.766922 ip-172-31-2-35 maja-processing-3.2.2 3.2 [000000024200] [D] GDAL Error 1 : /home/ubuntu/efs/Start-MAJA/tmp/site/T33VWC/GIPP_001/in/S2B_MSIL1C_20181024T102059_N0206_R065_T33VWC_20181024T160131.SAFE/GRANULE/L1C_T33VWC_A008528_20181024T102428/IMG_DATA/T33VWC_20181024T102059_B05.jp2:Not a TIFF or MDI file, bad magic number 0 (0x0)  [vnsGDALLogInit.cxx:CPLIPFErrorHandler:59]
2019-05-10T09:18:51.797647 ip-172-31-2-35 maja-processing-3.2.2 3.2 [000000024200] [D] vnsCachingMacro Proceed caching... with file name vns_caching_TOAReader6.tif (ModeStreamDivisions=5; NumberOfStreamDivisions=800).  [vnsSentinel2L1ImageFileReaderBase.txx:GenerateTOACaching:490]

I have also tried looking into the code of start_maja.py and it seems that at some point no files are found for nomL2init_Natif and nomL2init_MUSCATE line 396-402), resulting in L2type to be set to None which does result in an error later (line 491-495) (I don’t see any other place where L2type is defined in between).

        nomL2init_Natif = glob.glob("%s/%s" % (repL2, nomL2_par_dateImg_Natif[d]))
        nomL2init_MUSCATE = glob.glob("%s/%s" % (repL2, nomL2_par_dateImg_MUSCATE[d]))
        if len(nomL2init_Natif) > 0:
            derniereDate = d
            L2type = "Natif"

        elif len(nomL2init_MUSCATE) > 0:
            L2type = "MUSCATE"
            derniereDate = d

So then I tried to find out which folders it is searching in the above code and which folders are available and I found it is searching for: '../site_name/T33VWC/GIPP_001//S2?_OPER_SSC_L2VALD_T33VWC____20180601.DBL.DIR' (Natif) and ../site_name/T33VWC/GIPP_001//SENTINEL2?_20180601-*_TT33VWC_C_V*(MUSCATE) while only SENTINEL2A_20180601-102024-463_L2A_T33VWC_C_V1-0 was in this folder (I don’t get where the second T in TT33VWC instead of T33VWC is coming from.

What do you think is the best approaching to debugging this issue?

I know this is all very complicated and explained poorly, but I hope there is a simple solution for all this. If you need any more information on my setup please ask!