Typing this into the online sage cell (https://sagecell.sagemath.org/) gives an error (using the GAP language):
LoadPackage("qpa");
Q:=Quiver(3,[[1,2,"a"],[2,3,"b"]]);KQ:=PathAlgebra(GF(3),Q);AssignGeneratorVariables(KQ);rel:=[a*b];A:=KQ/rel;
But this error doesnt occur when opening GAP in a terminal and entering the code. So my question is whether there is a problem in the sage online cell related to GAP or how I can fix this. Is there by the way another site offering to use GAP online?