Fix case where payment engine does not implement can_generate_second_slip?
Fix case where payment engine does not implement can_generate_second_slip?

nicolasiensen/labcriativo,wlads/catarse,globalavocado/catarse,victor95pc/catarse,diraulo/catarse,ujjwalkhanal/helpbegin,mrmarcondes/catarse,diegorv/catarse,gumanoz/catarse,diogob/catarse,adrianob/99gamers,catarse/catarse,diegorv/catarse,gumanoz/catarse,gumanoz/catarse,rokibulhassan/catarse,vicnicius/catarse,Haseeb-Qureshi/catarse,adrianob/99gamers,stephenhack/yhacks,andrewyong82/100pp,ujjwalkhanal/helpbegin,thiagocatarse/catarse,danielweinmann/catarse,paulopatto/catarse,mrmarcondes/catarse,wlads/catarse,nicolasiensen/labcriativo,ujjwalkhanal/helpbegin,devton/catarse,rokibulhassan/catarse,umeshduggal/flockaway,ripple0328/catarse,umeshduggal/flockaway,Haseeb-Qureshi/catarse,devton/catarse,paulopatto/catarse,williamair1/catarse,nicolasiensen/labcriativo,Saharitte/catarse,JamesUcci/webapplication,thiagocatarse/catarse,vicnicius/catarse,liberland/catarse,liberland/catarse,vandofb/catarse,sushant12/jvn,adrianob/catarse,mrmarcondes/catarse,catarse/catarse,catarse/catarse,rokibulhassan/catarse,globalavocado/catarse,JamesUcci/webapplication,juanmanunez/catarse,paulopatto/catarse,sushant12/jvn,JamesUcci/webapplication,coopsource/catarse,devton/catarse,danielweinmann/catarse,devton/catarse,paulopatto/catarse,sushant12/jvn,wlads/catarse,andrewyong82/100pp,diogob/catarse,juanmanunez/catarse,catarse/catarse,adrianob/99gamers,andrewyong82/100pp,diraulo/catarse,stephenhack/yhacks,ripple0328/catarse,Saharitte/catarse,ripple0328/catarse,diogob/catarse,umeshduggal/flockaway,diegorv/catarse,Haseeb-Qureshi/catarse,liberland/catarse,coopsource/catarse,juanmanunez/catarse,williamair1/catarse,vandofb/catarse,ujjwalkhanal/helpbegin,coopsource/catarse,vandofb/catarse,williamair1/catarse,Saharitte/catarse,adrianob/catarse,thiagocatarse/catarse,ripple0328/catarse,victor95pc/catarse,globalavocado/catarse,sushant12/jvn,victor95pc/catarse,adrianob/catarse,diraulo/catarse,vicnicius/catarse,stephenhack/yhacks