TypeError: 'gurobipy.LinExpr' object is not subscriptable

Hi, I am trying to set up my code with constraints and running into some issues. I have a bus with 32 elements, and I am trying to set up multiple constraints for each of the busses. I am getting weird errors around unsupported operand type(s) for *: 'int' and 'generator' gurobi constraint or TypeError: 'gurobipy.LinExpr' object is not subscriptable. Any help would be appreciated. My code is below:

# user/literature defined input variables

v_nom = 12.66 * 1000
v_min = 0.95
v_max = 1.05
i_min = 0.95
i_max = 1.05 #***could also come back and calculate this based on V_max & P base
p_base = 1000
p_supply = 3715
q_supply = 2300
p_dg = 0
q_dg = 0
ke = 168
s = 4
y = 50

# input variables from data file
load_bus = load_data[:,0]
p_demand = load_data[:,1]
q_demand = load_data[:,2]
line_from = line_data[:,0]
line_to = line_data[:,1]
line_num = line_data[:,2]
r = line_data[:,3]
x = line_data[:,4]
z = r + 1j*x

model = gp.Model('MILP')

num_bus = 32

p = model.addVars(num_bus, vtype=GRB.CONTINUOUS, name="p")
q = model.addVars(num_bus, vtype=GRB.CONTINUOUS, name="q")
i = model.addVars(num_bus, vtype=GRB.CONTINUOUS, name="i")
b = model.addVars(num_bus, vtype=GRB.BINARY, name="b")

delta = (v_max**2 - v_min**2)/ (s+1)

# add 4 constraints

# 1. active power balance
p_bal = model.addConstr(gp.quicksum(p[type] for type in range(num_bus)) -
                               gp.quicksum((p[n+1] + r[n+1]*i[n+1] for n in range(num_bus-1))) +
                               p_supply +
                               p_dg
                               == np.sum(p_demand)) #removed for n in range() on the RHS of ==
# 2. reactive power balance
q_bal = model.addConstr(gp.quicksum(q[n] for n in range(num_bus-1)) -
                               gp.quicksum((q[n+1] + x[n+1]*i[n+1] for n in range(num_bus-1))) +
                               q_supply + 
                               q_dg
                               == np.sum(p_demand)) #removed for n in range() on the RHS of ==
# 3. voltage drop
v_drop = model.addConstr((i[n]*(r[n]**2) - 
                               (2*(r[n]*p[n] + x[n]*q[n])) - 
                               ((z[n]**2) *i[n]) -
                               (i[n+1]*(r[n]**2)) -
                               (b[n]) for n in range(num_bus-1))
                               == 0) #create multiple constraints, 1 for each bus of this formula
# 4. VI related to PQ
vi_pq = model.addConstrs(((p[type]*p[type]) + (q[type]*q[type]) for type in range (num_bus))
                         == (pow(v_min,2) + ((1/2)*delta * i[v]) for v in range(num_bus)) +
                         (s*gp.quicksum(delta*i[v] for v in range(num_bus))))

My error is the following:

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
/var/folders/s6/k3hg_1v51_d1t2bgqyr1ch4m0000gn/T/ipykernel_28908/3565018324.py in <module>
     22 # 4. VI related to PQ
     23 vi_pq = model.addConstrs(((p[type]*p[type]) + (q[type]*q[type]) for type in range (num_bus))
---> 24                          == (pow(v_min,2) + ((1/2)*delta * i[v]) for v in range(num_bus)) +
     25                          (s*gp.quicksum(delta*i[v] for v in range(num_bus))))
     26 

src/gurobipy/linexpr.pxi in gurobipy.LinExpr.__add__()

src/gurobipy/linexpr.pxi in gurobipy.LinExpr.__init__()

TypeError: 'gurobipy.LinExpr' object is not subscriptable

Appreciate your help. Thanks!