[solved]Snips-audio-server.service failed to start on respeaker core v2

manual installation went ok - without error.
all snips services running but:
sudo systemctl status “snips-audio-server” results in:

● snips-audio-server.service - Snips Audio Server
Loaded: error (Reason: Invalid argument)
Active: inactive (dead)

Aug 31 15:52:07 v2 systemd[1]: [/lib/systemd/system/snips-audio-server.service:4] Missing ‘=’.
Aug 31 15:59:15 v2 systemd[1]: [/lib/systemd/system/snips-audio-server.service:4] Missing ‘=’.

“/lib/systemd/system/snips-audio-server.service” is:

[Unit]
Description=Snips Audio Server
After=network.target pulseaudio.service

[Service]
User=_snips
Group=_snips
ExecStart=/usr/bin/snips-audio-server
Restart=always
RestartSec=5
ExecStartPre=/usr/local/bin/wait_for_pulse_devices.sh
Environment=“XDG_RUNTIME_DIR=/var/snips-audio-server”

[Install]
WantedBy=multi-user.target

what is wrong?
can anyone give me a hint?
thks for any reply
Luke

Ok i found the error by using:

sudo systemd-analyze verify snips-audio-server.service

some empty lines after the line with WantedBy

found also some wrong lines in pulseaudio.service