ClassCastException when asking for a subwiki that doesn't exist

jakarta.servlet.ServletException: Failed to execute the action with name [view]
	com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:113)
	jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
	com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:123)
	org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:71)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:66)
	org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:135)
	org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:212)
	org.xwiki.container.servlet.filters.internal.SafeRedirectFilter.doFilter(SafeRedirectFilter.java:106)
	org.xwiki.container.servlet.filters.internal.ResolveRelativeRedirectFilter.doFilter(ResolveRelativeRedirectFilter.java:129)
	org.xwiki.container.servlet.filters.internal.SourceURLResolverFilter.doFilter(SourceURLResolverFilter.java:177)
	org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:120)