MPD Ampache Installation funktioniert nicht: The root Ampache folder has changed

Hallo,
ich habe versucht das Ampache Webinterface für den MPD Player zu installieren. Bei der Installation gab es keine Fehlermeldung, aber beim Start des Webinterfaces erhalte ich die Meldung: The root Ampache folder has changed to ./public
und weiter Please check the Ampache wiki for more information mit dem Link: https://github.com/ampache/ampache/wiki/Ampache-Next-Changes
Den Inhalt verstehe ich aber nicht. Das YMPD Webinterface funktioniert.
Was habe ich falsch gemacht oder funktioniert die Installation nicht richtig?

Debug info:
#### MPD Version ####
Version: 0.21.5-3

#### AUDIO-DEVICES (aplay -L) ####
null
Discard all samples (playback) or generate zero samples (capture)
jack
JACK Audio Connection Kit
pulse
PulseAudio Sound Server
equal
plugequal
Equalizer for plughw:0,0
default:CARD=Headphones
bcm2835 Headphones, bcm2835 Headphones
Default Audio Device
sysdefault:CARD=Headphones
bcm2835 Headphones, bcm2835 Headphones
Default Audio Device
dmix:CARD=Headphones,DEV=0
bcm2835 Headphones, bcm2835 Headphones
Direct sample mixing device
dsnoop:CARD=Headphones,DEV=0
bcm2835 Headphones, bcm2835 Headphones
Direct sample snooping device
hw:CARD=Headphones,DEV=0
bcm2835 Headphones, bcm2835 Headphones
Direct hardware device without any conversions
plughw:CARD=Headphones,DEV=0
bcm2835 Headphones, bcm2835 Headphones
Hardware device with all software conversions
usbstream:CARD=Headphones
bcm2835 Headphones
USB Stream Output
default:CARD=IQaudIODAC
IQaudIODAC, IQaudIO DAC HiFi pcm512x-hifi-0
Default Audio Device
sysdefault:CARD=IQaudIODAC
IQaudIODAC, IQaudIO DAC HiFi pcm512x-hifi-0
Default Audio Device
dmix:CARD=IQaudIODAC,DEV=0
IQaudIODAC, IQaudIO DAC HiFi pcm512x-hifi-0
Direct sample mixing device
dsnoop:CARD=IQaudIODAC,DEV=0
IQaudIODAC, IQaudIO DAC HiFi pcm512x-hifi-0
Direct sample snooping device
hw:CARD=IQaudIODAC,DEV=0
IQaudIODAC, IQaudIO DAC HiFi pcm512x-hifi-0
Direct hardware device without any conversions
plughw:CARD=IQaudIODAC,DEV=0
IQaudIODAC, IQaudIO DAC HiFi pcm512x-hifi-0
Hardware device with all software conversions
usbstream:CARD=IQaudIODAC
IQaudIODAC
USB Stream Output

#### MPD-LOGFILE LAST 50 ENTRIES ####
Mar 20 16:13 : exception: Failed to decode http://uwstream3.somafm.com:8388
Mar 20 16:13 : exception: nested: CURL failed: Failed to connect to uwstream3.somafm.com port 8388: Connection refused
Mar 20 16:13 : player: played „http://uwstream3.somafm.com:8388“
Mar 20 16:13 : exception: OutputThread could not get realtime scheduling, continuing anyway: sched_setscheduler failed: Operation not permitted
Mar 20 16:13 : exception: Failed to open mixer for ‚Max2Play ALSA Device‘: no such mixer control: PCM
Mar 20 16:13 : player: played „http://ice.somafm.com/beatblender“
Mar 20 16:14 : exception: Failed to decode http://pub4.di.fm/di_chillhop
Mar 20 16:14 : exception: nested: CURL failed: Could not resolve host: pub4.di.fm
Mar 20 16:14 : player: played „http://pub4.di.fm/di_chillhop“
Mar 20 16:14 : exception: Failed to decode http://pub4.di.fm/di_chillhop
Mar 20 16:14 : exception: nested: CURL failed: Could not resolve host: pub4.di.fm
Mar 20 16:14 : exception: Failed to decode http://pub4.di.fm/di_chillout
Mar 20 16:14 : exception: nested: CURL failed: Could not resolve host: pub4.di.fm
Mar 20 16:14 : player: played „http://pub4.di.fm/di_chillout“
Mar 20 16:14 : exception: Failed to decode http://pub4.di.fm/di_chillout
Mar 20 16:14 : exception: nested: CURL failed: Could not resolve host: pub4.di.fm
Mar 20 16:14 : player: played „http://pub4.di.fm/di_chillout“
Mar 20 16:14 : player: played „http://50.7.70.58:8691/live“
Mar 20 16:15 : exception: Failed to open mixer for ‚Max2Play ALSA Device‘: no such mixer control: PCM
Mar 20 16:15 : player: played „http://stream.novafm.dk:80/nova128“
Mar 20 16:15 : exception: Failed to open mixer for ‚Max2Play ALSA Device‘: no such mixer control: PCM
Mar 20 16:16 : player: played „http://stream.novafm.dk:80/nova128“
Mar 20 16:31 : client: [0] closed
Mar 20 16:31 : exception: RTIOThread could not get realtime scheduling, continuing anyway: sched_setscheduler failed: Operation not permitted
Mar 20 16:31 : client: [0] opened from 127.0.0.1:39316
Mar 20 16:31 : avahi: Service ‚Music Player @ maxclassic‘ successfully established.
Mar 20 16:31 : exception: Failed to read mixer for ‚Max2Play ALSA Device‘: no such mixer control: PCM
Mar 20 16:31 : avahi: Client Disconnected, will reconnect shortly
Mar 20 16:32 : exception: RTIOThread could not get realtime scheduling, continuing anyway: sched_setscheduler failed: Operation not permitted
Mar 20 16:32 : avahi: Service ‚Music Player @ maxclassic‘ successfully established.
Mar 20 16:32 : client: [0] opened from 127.0.0.1:58400
Mar 20 16:32 : client: [1] opened from 127.0.0.1:58402
Mar 20 16:32 : exception: Failed to read mixer for ‚Max2Play ALSA Device‘: no such mixer control: PCM
Mar 20 16:32 : client: [1] closed
Mar 20 16:32 : client: [2] opened from 127.0.0.1:58408
Mar 20 16:32 : client: [2] closed
Mar 20 16:32 : exception: OutputThread could not get realtime scheduling, continuing anyway: sched_setscheduler failed: Operation not permitted
Mar 20 16:32 : exception: Failed to open mixer for ‚Max2Play ALSA Device‘: no such mixer control: PCM
Mar 20 16:56 : client: [0] closed
Mar 20 16:56 : player: played „http://stream.novafm.dk:80/nova128“
Mar 20 16:57 : exception: RTIOThread could not get realtime scheduling, continuing anyway: sched_setscheduler failed: Operation not permitted
Mar 20 16:57 : exception: OutputThread could not get realtime scheduling, continuing anyway: sched_setscheduler failed: Operation not permitted
Mar 20 16:57 : avahi: Service ‚Music Player @ maxclassic‘ successfully established.
Mar 20 16:57 : exception: Failed to open mixer for ‚Max2Play ALSA Device‘: no such mixer control: PCM
Mar 20 17:05 : player: played „http://stream.novafm.dk:80/nova128“
Mar 20 17:06 : exception: RTIOThread could not get realtime scheduling, continuing anyway: sched_setscheduler failed: Operation not permitted
Mar 20 17:06 : exception: OutputThread could not get realtime scheduling, continuing anyway: sched_setscheduler failed: Operation not permitted
Mar 20 17:06 : avahi: Service ‚Music Player @ maxclassic‘ successfully established.
Mar 20 17:06 : exception: Failed to open mixer for ‚Max2Play ALSA Device‘: no such mixer control: PCM
Mar 20 17:06 : player: played „http://stream.novafm.dk:80/nova128“