The sequence after CDR-L3 is very unusual and the code can't find the sequence motif that it is looking for, or because CDR-L3 is longer than the code allows. When you run abnum with more information switched on is says that CDR-L3 is too long, but this may be a side-effect of the code not finding the sequence motif. CDR-L3 usually has a sequence that looks like FGXG after it - this sequence is indeed unusual and doesn't seem to have that motif.
The sequence after CDR-L3 is very unusual and the code can't find the sequence motif that it is looking for, or because CDR-L3 is longer than the code allows. When you run abnum with more information switched on is says that CDR-L3 is too long, but this may be a side-effect of the code not finding the sequence motif. CDR-L3 usually has a sequence that looks like FGXG after it - this sequence is indeed unusual and doesn't seem to have that motif.