human
Solve the following python programming problem given the following code:
def jac(self, z, t) : 
    lmbd = self.lmbd 
    j = np.zeros ((((self.lband + self.uband) + 1), 3), order = 'F') 
    def set_j(ri, ci, val) : 
        j [(((self.uband + ri) - ci), ci)] = val 
set_j (0, 0, (- lmbd [0])) 
    set_j (1, 0, lmbd [0]) 
    set_j (1, 1, (- lmbd [1])) 
    set_j (2, 1, t [1]) 
    set_j (2, 2, (- lmbd [2])) 
    return j 

    
    

    Fix the buggy line: set_j (2, 1, t [1])
assistant
#Here is Python code to fix the buggy line: set_j (2, 1, t [1])
.

set_j (2, 1, lmbd [1])