FlaskFM Error: IndentationError: expected an indented block (ANSWER)

https://www.codecademy.com/courses/learn-flask/projects/flask-database-music

Step 15 gives this error:

File “/home/ccuser/workspace/project-flask-music/routes.py”, line 75
else:
^
IndentationError: expected an indented block

The solution:
on line 71, change the code to:

if request.method == ‘POST’ and form.validate():
pass