Web browser timeout waiting for "Settings - Information" & Scan Details

> Slim::Networking::IO::Select::__ANON__ (147) Error: Select task failed
> calling Slim::Web::HTTP::processHTTP: illegal file descriptor or
> filehandle (either no attached file descriptor or illegal value): at
> /share/HDA_DATA/.qpkg/LogitechMediaServer/var/home/SqueezeboxServer/Slim/Networking/IO/Select.pm
> line 150

Unfortunately this is a rather generic error message. It could be caused
by networking issues, or the system running out of file handles, or...
Are there any more messages before or after that? Tried a restart?

> My LMS 7.8.1 runs on a QTS Linux NAS.

Latest 7.8.1?

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Michael