Javascript error: Uncaught ReferenceError: once is not defined

hi @DrupalDope Can you please elaborate the issue by specifying the "Steps to reproduce"?

I'm on Drupal 9.5.10 , sorry, forgot to state the version

the error went away after I added the dependency core/once to that paragraph's library.yml file

Yea sure , if you are using the version "drupal/w3css_paragraphs": "^1.0",

its already there :

w3css-paragraphs-admin-seven:
  version: VERSION
  css:
    theme:
      css/w3css-color-libraries-classes.css: { }
      css/w3css-paragraphs-admin-seven.css: { }
  js:
    js/w3css-paragraphs-admin-seven.js: { }
  dependencies:
    - core/jquery
    - core/drupal
    - core/once

w3css-paragraphs-admin-claro:
  version: VERSION
  css:
    theme:
      css/w3css-color-libraries-classes.css: { }
      css/w3css-paragraphs-admin-claro.css: { }
  js:
    js/w3css-paragraphs-admin-claro.js: { }
  dependencies:
    - core/jquery
    - core/drupal
    - core/once

w3css-paragraphs:
  version: VERSION
  css:
    theme:
      css/w3css-color-libraries-classes.css: { }
      css/w3css-color-active-classes.css: { }
      css/w3css-paragraphs-base.css: { }
  js:
    js/w3css-paragraphs-base.js: { }

glad that its resolve, btw

thanks, but I was using 1.0.13, and it was not there, even after a composer update --with-all-dependencies

I added the lines into /modules/contrib/w3css_paragraphs/modules/w3css_paragraphs_tabs/w3css_paragraphs_tabs.libraries.yml

Hello,

The w3css paragraphs is always used with the w3css theme. If you are doing any custom work, you should copy all the w3css js dependencies to the theme or module. The theme load all in drupal8_w3css_theme.libraries.yml line 73.

The demo site has six Accordion examples all are working fine. The is built with D10.

Best wishes,
Alaa

Thank you @flashwebcenter
Indeed, I was using the paragraphs inside another theme.
I will try what you suggested.

However, if it's just a question of adding the libraries to each paragraph wouldn't it be useful if the paragraphs worked with other themes as well ?
It might greatly expand the number of users of the module.

@DrupalDope, I agree. I will add this to do list.
Best wishes,
Alaa