Please have a look at https://trac.sagemath.org/ticket/27508
Basically, the error appear to boil down to Singular calling "lex" ordering "lp", and no proper translation of this done (I'm not sure, that's my impression, see the ticket for more details) -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
