Error with snap2stamps

Hi everyone,
I have an error while running

python coreg_ifg_topsar.py project.conf

that says:

Error: [NodeId: Interferogram] org.jblas.NativeBlas.dgemm(CCIIID[DII[DIID[DII)V

It appears with every image, and the process not produce any results. Any idea of this error?
The entire terminal output is this (e.g. for step 19):

#####################################################################

/home/tidop/Documentos/dinsar_gpr_vigo/pruebapsi/split/20210105/20210105_IW2.dim
[19] Processing slave file :20210105_IW2.dim

SNAP STDOUT:INFO: org.esa.snap.core.gpf.operators.tooladapter.ToolAdapterIO: Initializing external tool adapters
INFO: org.esa.s2tbx.dataio.gdal.GDALVersion: GDAL not found on system. Internal GDAL 3.0.0 from distribution will be used. (f1)
INFO: org.esa.s2tbx.dataio.gdal.GDALVersion: Internal GDAL 3.0.0 set to be used by SNAP.
INFO: org.esa.snap.core.util.EngineVersionCheckActivator: Please check regularly for new updates for the best SNAP experience.
INFO: org.esa.s2tbx.dataio.gdal.GDALVersion: Internal GDAL 3.0.0 set to be used by SNAP.
Executing processing graph
INFO: org.hsqldb.persist.Logger: dataFileCache open start
-- org.jblas ERROR Couldn't load copied link file: java.lang.UnsatisfiedLinkError: /tmp/jblas5126767960954945621/libjblas.so: libgfortran.so.5: no se puede abrir el archivo del objeto compartido: No existe el archivo o el directorio.

WARNING: org.esa.s1tbx.insar.gpf.coregistration.CreateStackOp: Unable to calculate baselines. org.jblas.NativeBlas.dgemm(CCIIID[DII[DIID[DII)V
org.jblas.NativeBlas.dgemm(CCIIID[DII[DIID[DII)V
 done.

Error: [NodeId: Interferogram] org.jblas.NativeBlas.dgemm(CCIIID[DII[DIID[DII)V
-- org.jblas INFO Deleting /tmp/jblas5126767960954945621/libgfortran-4.so
-- org.jblas INFO Deleting /tmp/jblas5126767960954945621/libquadmath-0.so
-- org.jblas INFO Deleting /tmp/jblas5126767960954945621/libjblas_arch_flavor.so
-- org.jblas INFO Deleting /tmp/jblas5126767960954945621/libjblas.so
-- org.jblas INFO Deleting /tmp/jblas5126767960954945621

[19] Finished process in 2.5418510437 seconds.

#####################################################################

My project.conf is the following:

######### CONFIGURATION FILE ######
###################################
# PROJECT DEFINITION
PROJECTFOLDER=/home/tidop/Documentos/dinsar_gpr_vigo/pruebapsi
GRAPHSFOLDER=/home/tidop/snap2stamps/graphs
##################################
# PROCESSING PARAMETERS
IW1=IW2
MASTER=/home/tidop/Documentos/dinsar_gpr_vigo/pruebapsi/master/S1B_IW_SLC__1SDV_20210222T182731_20210222T182758_025723_03110A_121B_split.dim
##################################
# AOI BBOX DEFINITION
LONMIN=-8.72
LATMIN=42.37
LONMAX=-8.57
LATMAX=42.45
##################################
# SNAP GPT 
GPTBIN_PATH=/home/tidop/snap/bin/gpt
##################################
# COMPUTING RESOURCES TO EMPLOY
CPU=12
CACHE=32G
##################################

Thanks.

This error is gone with

sudo apt-get install libgfortran5
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