.NET 5 RC2 snap with systemd (cannot create user data directory)

Hello,
I’ve installed latest .NET 5.0 RC2 on Ubuntu 20.04.1 LTS Server with

sudo snap install dotnet-sdk --channel=5.0/beta --classic
sudo snap alias dotnet-sdk.dotnet dotnet
sudo ln -s /snap/bin/dotnet /usr/bin/dotnet

And it runs my app fine in terminal
dotnet /var/www/MySite/MySite.dll

However I’d like to run my app as a host service with systemd

[Unit]
Description=MySite

[Service]
WorkingDirectory=/var/www/MySite/
ExecStart=dotnet MySite.dll
RestartSec=10
KillSignal=SIGTERM
SyslogIdentifier=mysite
User=www-data
Environment=ASPNETCORE_ENVIRONMENT=Production
Environment=DOTNET_PRINT_TELEMETRY_MESSAGE=false

[Install]
WantedBy=multi-user.target

But when I try to start the service I get weird permission error

cmd_run.go:991: WARNING: cannot create user data directory: cannot create “/var/www/snap/dotnet-sdk/103”: mkdir /var/www/snap: permission denied

cannot create user data directory: /var/www/snap/dotnet-sdk/103: Permission denied

How to correctly approach this?
Thanks.

Resolved, had to create www-data user with -m param (with home directory and shell access)
sudo useradd -m www-data