java web start / error

[Graham Perrin]

On 05/03/2021 00:53, Antonio Olivares wrote:
> … It had worked before since a while.  But 2 updates ago I see this error
> message on 12.2-RELEASE-amd64-p4 and it also happens on 13.0-BETA4 .  How
> can I troubleshoot this?  javaws was used before, it opened up an *.jlnp
> file.  Upon successfully loading an online gradebook is started.  I had
> been using it successfully for several FreeBSD releases since 8.1/8.2. …

With which web browsers?