Cannot open JSON file

[wvengen]

When loading a JSON file pointing to an archive (one served by browsertrix-cloud), I get the error message

Sorry, this URL could not be loaded because the size of the file is not accessible.
Make sure this is a valid URL and you have access to this file.

It appears that for JSON files the sourceLoader does not return a length in this case

wabac.js/src/loaders.js

Lines 562 to 570 in d7e0021

	if (!sourceLoader.length) {
	progressUpdate(0, `\
	Sorry, this URL could not be loaded because the size of the file is not accessible.
	Make sure this is a valid URL and you have access to this file.`);
	if (abort) {
	abort.abort();
	}
	return false;
	}

And indeed, when disabling this check, the archive is loaded correctly.
Does it make sense to replace this conditional by the following (which works for me)?

if (sourceLoader.canLoadOnDemand && !sourceLoader.length) {

[iloverails]

I believe there is need to check Content-length header, if it's incorrect or empty than you will get that error as well

[ikreymer]

I think this should now be fixed in latest versions of wabac.js -- we have collections sharing for public collections, which allows you to load .json URLs directly via ReplayWeb.page. If it is happening, do you have a specific repro?