Issue loading subseasonal weekly_mean psl in esarchive

I'm running a subseasonal recipe from nord4 using the esarchive filesystem, using:

Recipe:

/gpfs/scratch/bsc32/bsc032259/cstbriefun/SUNSET/recipe_ecvs_cal_subs_esarchive.yml

Config file for subseasonal (I added psl as it was not there):

/gpfs/scratch/bsc32/bsc032259/sunset/conf/archive_subseasonal.yml

Call:

cd /gpfs/scratch/bsc32/bsc032259/sunset
bash launch_SUNSET.sh /gpfs/scratch/bsc32/bsc032259/cstbriefun/SUNSET/recipe_ecvs_cal_subs_esarchive.yml /gpfs/scratch/bsc32/bsc032259/cstbriefun/SUNSET/full_ecvs_calibration.R  --wallclock="2:00:00" --custom_directives="--qos=bsc_es --ntasks=48 -N 1

I get an error during Start() and it is supposed to be because some selectors are not strings. I checked and all relevant variables int he recipe are defined as strings. Find the error in the following log: /gpfs/scratch/bsc32/bsc032259/output/recipe_ecvs_cal_subs_esarchive_20251128143212/logs/slurm/run-recipe_ecvs_cal_subs_esarchive_20251128143212_01.err

Thanks and I appologise beforehand if the error is very dumb,

Pep