Hello there, I am having the following problem in the course 5, week 1, assignment 1, in the cell UNQ_C2, as follows:

**Error**

```
---------------------------------------------------------------------------
IndexError Traceback (most recent call last)
<ipython-input-102-0cebf7854aa8> in <module>
9 parameters_tmp['by'] = np.random.randn(2, 1)
10
---> 11 a_tmp, y_pred_tmp, caches_tmp = rnn_forward(x_tmp, a0_tmp, parameters_tmp)
12 print("a[4][1] = \n", a_tmp[4][1])
13 print("a.shape = \n", a_tmp.shape)
<ipython-input-101-e6819b85944b> in rnn_forward(x, a0, parameters)
---> 64 a[:,:,t] = a_next[:,:,t]
65
66 # Save the value of the prediction in y (≈1 line)
IndexError: too many indices for array
```

**Problem**

How can this be, when the dimensions are the same?

```
a_next.shape = (5, 10)
a.shape = (5, 10)
```

**Workaround (Wrong)**

This workaround seems to work (yey!) but causes a different issue later with the assertions

```
a = a_next
```

**Workaround-cased new error**

```
---------------------------------------------------------------------------
AssertionError Traceback (most recent call last)
<ipython-input-100-0cebf7854aa8> in <module>
18
19 #UNIT TEST
---> 20 rnn_forward_test(rnn_forward)
~/work/W1A1/public_tests.py in rnn_forward_test(target)
71 a, y_pred, caches = target(x_tmp, a0_tmp, parameters_tmp)
72
---> 73 assert a.shape == (n_a, m, T_x), f"Wrong shape for a. Expected: ({n_a, m, T_x}) != {a.shape}"
74 assert y_pred.shape == (n_y, m, T_x), f"Wrong shape for y_pred. Expected: ({n_y, m, T_x}) != {y_pred.shape}"
75 assert len(caches[0]) == T_x, f"len(cache) must be T_x = {T_x}"
AssertionError: Wrong shape for a. Expected: ((7, 8, 13)) != (7, 8)
```

Any pointers will be much appreciated.

Thanks!