I have tried to solve this way. I do not know where it went wrong

```
def ham_close_spins(B, J):
"""Creates the Hamiltonian for two close spins.
Args:
B (float): The strength of the field, assumed to point in the z direction.
J (list[float]): A vector of couplings [J_X, J_Y, J_Z].
Returns:
qml.Hamiltonian: The Hamiltonian of the system.
"""
e = 1.6e-19
m_e = 9.1e-31
alpha = B*e/(2*m_e)
hbar = 1e-34
##################
# YOUR CODE HERE #
##################
coeffs = [-alpha*hbar,-alpha*hbar, hbar*hbar*J[0]/4, hbar*hbar*J[1]/4,hbar*hbar*J[2]/4] # MODIFY THIS
obs = [qml.PauliZ(0), qml.PauliZ(1), qml.PauliX(0)@qml.PauliX(1), qml.PauliY(0)@qml.PauliY(1), qml.PauliZ(0)@qml.PauliZ(1)] # MODIFY THIS
return qml.Hamiltonian(coeffs, obs)
```