Ошибка loading error no content to load

Unfortunately wkhtmltopdf doesn’t handle downloading of complex websites, because it’s uses Qt/QtWebKit library which seems to have some issues.

One problem is that wkhtmltopdf doesn’t support relative addresses (GitHub: #1634, #1886, #2359, QTBUG-46240) such as:

<img src="/images/filetypes/txt.png">
<script src="//cdn.optimizely.com/js/653710485.js">

and it loads them as local. One solution which I’ve found to this is the correcting html file in-place by ex in-place editor:

ex -V1 page.html <<-EOF
  %s,'//,'http://,ge 
  %s,"//,"http://,ge 
  %s,'/,'http://www.example.com/,ge
  %s,"/,"http://www.example.com/,ge
  wq " Update changes and quit.
EOF

However it won’t work for files which have these type of URLs on the remote.

Another problem is that it doesn’t handle missing resources. You can try to specify --load-error-handling ignore, but in most cases it doesn’t work (see #2051), so this is still outstanding. Workaround is to simply remove these invalid resources, before conversion.

Alternatively to wkhtmltopdf, you can use either htmldoc, PhantomJS with some additional script, for example using rasterize.js:

phantomjs rasterize.js http://example.com/

or dompdf (HTML to PDF converter for PHP, you can install by composer) with sample code below:

<?php
// somewhere early in your project's loading, require the Composer autoloader
// see: http://getcomposer.org/doc/00-intro.md
$HOMEDIR = "/Users/foo";
require $HOMEDIR . '/.composer/vendor/autoload.php';

// disable DOMPDF's internal autoloader if you are using Composer
define('DOMPDF_ENABLE_AUTOLOAD', FALSE);
define('DOMPDF_ENABLE_REMOTE', TRUE);

// include DOMPDF's default configuration
require_once $HOMEDIR . '/.composer/vendor/dompdf/dompdf/dompdf_config.inc.php';

$htmlString = file_get_contents("https://example.com/foo.pdf");

$dompdf = new DOMPDF();
$dompdf->load_html($htmlString);
$dompdf->render();
$dompdf->stream("sample.pdf");

The code example of const MODEL_URL = require('./modelfile.file_extention'); by @JonathanSum — the value of variable MODEL_URL should be set to the «real» model path (either a unix-style file path or a file:// scheme URI) that accessible by the native module.

However the behavior of require() may be different for different project configs, according to bundler or other build time toolchain. For example, in an expo managed app, the return value of require('./assets/my_model.ort') is a number (integer as asset ID) and it can be passed to some other functions to get the real path of the file (when using the default expo settings, using metro bundler and expo-asset to resolve asset file path).

As long as you figured out how to validate the file path of the model and pass it to InferenceSession.create() it should work as expected.

@fs-eire
Thank you so much for your insights and advice! I am using metro and did see a number returned by require() like you said. However, I couldn’t find helper methods from metro to extract the full file path given an asset ID number. On the other hand, earlier I thought Image.resolveAssetSource() can only be used with image asset, but it looks like I can use it to get the link to my ort model file as well; in other words, Image.resolveAssetSource() works with non-image assets as well, is my understanding correct?

I also tried the approach you suggested and downloaded the model file onto the temporary folder using RNFS. And even though I can see the model file in the temporary directory when I print out all the content of the temporary directory, the model loading still failed when I passed in the file path of the downloaded model file in the temporary directory. The error message is Error Message: [Error: Can't load a model: No content provider: /data/user/0/com.onnxtestbed/cache/LinearBlend_v001.ort]. I am running my bare react-native project (no expo) using android studio and testing it on my physical android device. You can find the code to reproduce the error here https://github.com/jackylu0124/ort-react-native-issue (I also realized that in my very original post on the very top, the link to the repo is broken but they are fixed now).

I would really appreciate it if you could please let me know what I did wrong in my code, and thank you so much for your help again!