"Confusion of Tongues" - Unable to search at all in multi-language ZIM ted_mul_all_2024-07

[Perplexitus]

Hello,

I am getting this "Confusion of Tongues" error when doing a generic search using books.name=ted_mul_all_2024-07 (All Ted Videos ZIM).

http://192.168.1.40:3000/kiwix/viewer#search?books.name=ted_mul_all_2024-07&pattern=test Invalid request The requested URL "/kiwix/search?books.name=ted_mul_all_2024-07&pattern=test&userlang=en" is not a valid request. Two or more books in different languages would participate in search, which may lead to confusing results.

It also seems to be the default response when I input a blank URL.
http://192.168.1.40:3000/kiwix/search?books.name=ted_mul_all_2024-07

--Same output as above. Two or more books... blah blah.--

Using a Different ZIM file:
What's weird is that the same exact query works properly for a different book, such as Wikipedia (but just in English):
http://192.168.1.40:3000/kiwix/viewer#search?books.name=wikipedia_en_all_maxi_2024-01&pattern=test

...provides search results as expected...

Using a blank query for the Wikipedia ZIM gives me a "No query provided" response:
http://192.168.1.40:3000/kiwix/search?books.name=wikipedia_en_all_maxi_2024-01

The requested URL "/kiwix/search?books.name=wikipedia_en_all_maxi_2024-01" is not a valid request. No query provided.

Due to this issue in the TED videos ZIM, I am unable to search for anything when using this ZIM.

libkiwix/test/server_search.cpp

Lines 1638 to 1647 in 84ebee8

	ZimFileServer zfs(SERVER_PORT, ZimFileServer::DEFAULT_OPTIONS, ZIMFILES);
	for ( const auto& q : testQueries ) {
	{
	// HTML mode
	const std::string url = "/ROOT%23%3F/search?" + q;
	const auto r = zfs.GET(url.c_str());
	const TestContext ctx{ {"url", url} };
	EXPECT_EQ(r->status, 400) << ctx;
	EXPECT_EQ(r->body, expectedConfusionOfTonguesErrorHtml(url)) << ctx;
	}