GurobiError: Unsupported type (<class 'numpy.ndarray'>) for LinExpr addition argument

Hello,

I am trying to perform an array multiplication within a constraint, which you may check in the code below:

counter = []

m.addConstr(gb.quicksum(r_up[i] - r_down[i] for i in conv_gens) + gb.quicksum(-v_spill[j] for j in VRE_gens)
+ gb.quicksum(l_sh[d] - demands_data[d]['demand'] for d in loads) + gb.quicksum(np.dot(f[l], A[len(counter)]) for l in from_lines),gb.GRB.EQUAL,0)

counter.append(0)

How can I perform array multiplication in gurobi? I can't check any site with relevant info addressing the topic.

Thanks in adavance