All my evaluate test case failed,

I need help, why did all my evaluate test cases failed
TEST CASE #0

Input:
{‘nums’: [19, 25, 29, 3, 5, 6, 7, 9, 11, 14]}

Expected Output:
3

Actual Output:
None

Execution Time:
0.003 ms

Test Result:
FAILED

TEST CASE #1

Input:
{‘nums’: [19, 14, 11, 9, 7, 3, 5, 6]}

Expected Output:
5

Actual Output:
None

Execution Time:
0.002 ms

Test Result:
FAILED

TEST CASE #2

Input:
{‘nums’: [2, 4, 6, 8, 10]}

Expected Output:
0

Actual Output:
None

Execution Time:
0.001 ms

Test Result:
FAILED

TEST CASE #3

Input:
{‘nums’: [19, 5, 9, 12, 17]}

Expected Output:
1

Actual Output:
None

Execution Time:
0.001 ms

Test Result:
FAILED

TEST CASE #4

Input:
{‘nums’: [19, 5, 9, 12, 17]}

Expected Output:
1

Actual Output:
None

Execution Time:
0.001 ms

Test Result:
FAILED

TEST CASE #5

Input:
{‘nums’: [4, 21, 20, 14, 9, 7]}

Expected Output:
0

Actual Output:
None

Execution Time:
0.001 ms

Test Result:
FAILED

TEST CASE #6

Input:
{‘nums’: []}

Expected Output:
-1

Actual Output:
None

Execution Time:
0.001 ms

Test Result:
FAILED

TEST CASE #7

Input:
{‘nums’: [4]}

Expected Output:
0

Actual Output:
None

Execution Time:
0.001 ms

Test Result:
FAILED

SUMMARY

TOTAL: 8, PASSED: 0, FAILED: 8
[(None, False, 0.003),
(None, False, 0.002),
(None, False, 0.001),
(None, False, 0.001),
(None, False, 0.001),
(None, False, 0.001),
(None, False, 0.001),
(None, False, 0.001)]

If you mean the first time you run the tests, then:

It’s literally stated in the notebook.

If it’s later, then you probably implemented the function incorrectly.