Warning: Illegal string offset 'name' in DrupalBootstrapStyles

issue started in stackoverflow
https://stackoverflow.com/questions/60170467/drupal-8-warning-illegal-st...

@markcarver, my clients servers port 53 out is blocked, so dns is not working , so the server side cannot get any cdn content

PS, it was really tough figuring this out because the TTL values in the ProviderInterface.php are very high, so somewhere these values are cached and a simple cache rebuild will not flush them out. I even deleted the tmp directory and tried to find the files in sites/default/files/? not sure where these values get cached didn't have time to look close enough at the code, so in a code blitz to power through, I set all the TTL values to 0 in the ProviderInterface.php in order to have that part of the code execute where it's trying to go out to the cdn.

Due to supporting servers that have no port 53, I would much prefer that this cdn logic was moved to the front-end so that the requests to the cdns is all done on the front end and not from the back end.

the undefined index issue is merely a symptom of a server that doesn't have access to request dns resolution of cdn names

The other reported issues were on IIS servers, this might affect other environments if you flush all the cached values set TTL to 0 and kill port 53 out on the server asuming also the said server is not also a dns server with cached dns values.

also to test would have to maybe flush dns cache on the server after blocking port 53 out.

ok thanks for the tip, however we will still need a patch to fix the undefined index no?

or does setting cdn to '' in the sub theme get rid of any requests on the server end?

maybe a checkbox setting for bootstrap to turn on or off this.?

anyhow thanks for your tips, I'll see if I can come up with a helpful patch.

ok sounds good, thanks for your assistance and great work on this.

*** EDIT ***

I will test the option 'none' see what happens.

When I choose the option 'none' (compile locally) , it sounds like I have to compile something

from the docs:

If you need
to customize Bootstrap, you must compile the [Bootstrap Framework] source code
locally and disable the
[`cdn_provider` theme setting](<!-- @url theme_settings#cdn_provider -->).

I'm guessing, but it seems like to get the compiled resources I would have to choose the options from this webform from:
https://getbootstrap.com/docs/3.4/customize/

then download and copy them to the css folder

such as vendor-prefixes.less and bootstrap.min.css?

in order to test this I guess I'd have to disconnect my dev servers from the internet as are my clients servers or have a local copy running disconnected from the web.

Here is patch 2 rerolled for HEAD of 8.x-3.x

Patch 2 is for bootstrap 8.x-3.21
patch 16 is for bootstrap 8.x-3.23

This is an edge case for servers that have no CDN access, crash otherwise.

IMHO, it should only be the client that uses CDN, not the server.

@jonathanvarunbenjamin

have a look at your composer.json file for your project in the root of your drupal project and add a line for drupal/bootstrap something similar to this example:

"extra": {
  "patches": {
    "drupal/core": { "<patch1 information>": "<patch1 file path>" },
    "drupal/libraries": { "<patch1 information>": "<patch1 file path>",
    "drupal/bootstrap": { "Illegal offset fix in DrupalBootstrapStyles": "https://drupal.org/files/issues/2020-10-18/bootstrap-provide_missing_css-3113579-16.patch"
   }
  }

once you have done this run composer install
assumes you have composer installed correctly.

https://www.youtube.com/watch?v=PF8eDim7Wts