Possible bug with SimpleSearch/Admin

I don't know if this is a bug or just some humble fumble from me but I get this error when using SimpleSearch:
An exception has been thrown during the rendering of a template ("Invalid argument supplied for foreach()") in "simplesearch_results.html.twig" at line 12.
`Open: /srv/data/web/vhosts/domain.tld/htdocs/vendor/twig/twig/lib/Twig/Templ ate.php

                if (false === $e->getTemplateLine()) {
                    $e->setTemplateLine(-1);
                    $e->guess();
                }
                throw $e;
            } catch (Exception $e) {
                throw new Twig_Error_Runtime(sprintf('An exception has been thrown during the rendering of a template ("%s").', $e->getMessage()), -1, $template->getTemplateName(), $e);
            }
        } elseif (false !== $parent = $this->getParent($context)) {`

But if I specify one language (en-US, fr-FR...) in the Admin:

Settings > Language > Supported (fir st field)

it triggers the error. Leaving/Return it blank is ok.
So: SimpleSearch bug? Admin bug? or just plain n00b mess?

To make the above clearer : error occurs only with language setting not left blank

*But ONLY if I specify one language (en-US, fr-FR…) in the Admin:

Settings > Language > Supported (first field)

Could well be a bug, Maybe you could submit this as an issue in the simplesearch issue tracker? https://github.com/getgrav/grav-plugin-simplesearch/issues

Ok, I'll copy it there. Thx