Description of problem:
Start a radio station playback

Version-Release number of selected component:
lollypop-0.9.224-1

Additional info:
reporter:       libreport-2.8.0
cmdline:        python3 /usr/bin/lollypop
executable:     /usr/bin/lollypop
kernel:         4.8.16-300.fc25.x86_64
pkg_fingerprint: 46FE 509E 0ACB 8044
pkg_vendor:     Fedora Project COPR (gnumdk/lollypop)
runlevel:       N 5
type:           Python3
uid:            1000

Truncated backtrace:
application.py:269:prepare_to_exit:AttributeError: 'NoneType' object has no attribute 'stop'

Traceback (most recent call last):
  File "/usr/lib/python3.5/site-packages/lollypop/application.py", line 269, in prepare_to_exit
    self.charts.stop()
AttributeError: 'NoneType' object has no attribute 'stop'

Local variables in innermost frame:
position: 3000196944.54
action: None
self: <application.Application object at 0x7f50e004eab0 (lollypop+application+Application at 0x55e74272f220)>
param: None