Got “jquery is not defined” when enable this plugin

Hello @watchforever ,

This error usually occurs when the JavaScripts used by a plugin or theme are not written in full compliance with the JavaScript standards of coding. In such cases, the minification process does not minify the scripts properly. There is no much that we can do in these cases, the developers of the plugin should re-work the code of their JavaScripts to make them compliant with the coding standards.

Try the suggestion of my colleague:

The errors seem related to the Fusion Builder scripts.
1) Please disable the JavaScript Minification and Combination from the plugin’s dashboard > Front-End. If this resolves the error, then:
2) You can exclude a script from the mentioned features as explained below.
https://www.ads-software.com/support/topic/how-to-use-sg-optimizers-filters-procedure/”

You may then try another plugins which offer JavaScript Minification and Combination features and see if the issue would occur with them also.

Regards,
Plamen.M
Tech Support Team
SiteGround.com

Hello @watchforever,

Since we haven’t heard from you in the past couple of days, we will be marking the topic as Resolved. You will still be able to post a reply if further assistance is needed.

Best Regards,
Gergana Petrova

Sorry for the late response.

I suddenly had this problem one year ago, after the website runs correctly for a long time (I used Avada theme which is famous).

I tried to disable the JavaScript Minification and Combination from the plugin’s dashboard > Front-End. But not works. Got the following error:

(index):283 Uncaught ReferenceError: jQuery is not defined
    at (index):283:26822
(index):419 Uncaught ReferenceError: jQuery is not defined
    at (index):419:17988
js_composer_front.min.js?ver=6.8.0:10 Uncaught ReferenceError: jQuery is not defined
    at js_composer_front.mi…?ver=6.8.0:10:19617
    at js_composer_front.mi…?ver=6.8.0:10:19890
ultimate_bg.min.js?ver=3.19.11:1 Uncaught ReferenceError: jQuery is not defined
    at ultimate_bg.min.js?ver=3.19.11:1:45140
vhparallax.min.js?ver=3.19.11:1 Uncaught ReferenceError: jQuery is not defined
    at vhparallax.min.js?ver=3.19.11:1:1883
(index):452 Uncaught ReferenceError: jQuery is not defined
    at (index):452:2776
rbtools.min.js:1 Uncaught ReferenceError: jQuery is not defined
    at Object.window.RS_MODULES (rbtools.min.js:1:937)
    at n (rbtools.min.js:1:110)
    at Object.window.RS_MODULES (rbtools.min.js:12:9651)
    at n (rbtools.min.js:1:110)
    at Object.window.RS_MODULES (rbtools.min.js:1:961)
    at n (rbtools.min.js:1:110)
    at rbtools.min.js:1:902
    at rbtools.min.js:1:911
rs6.min.js:38 Uncaught ReferenceError: jQuery is not defined
    at rs6.min.js:38:9366
jquery-migrate.min.js:2 JQMIGRATE: Migrate is installed, version 3.3.2

Thank you for the update, @watchforever.

Could you please provide us with your domain name, so we can further check this on our end?

If you’re a SiteGround customer and you’re not comfortable with providing the domain here, you’re welcome to submit a new support ticket from within your account as well.

Best Regards,
Gergana Petrova

Hello @watchforever,

Since we haven’t heard from you in the past couple of days, we will be marking the topic as Resolved. You will still be able to post a reply if further assistance is needed.

Hi,I have a issue,When I try to add a product to card on website: jonitony.com is loading endlessly,I renew the page product is on card,
The provider of Theme said;
It seems you have enabled the WordPress cache plugin (not sure which plugin).
Please make sure to exclude the load of jQuery from the cache plugin.
You need to debug frontend for other errors:

?https://prnt.sc/vxTeiEejyevQ

Can you help me please to understand wich plagin to change or any,because I can’t work by codes,
Thanks

Hello @jonitony,

This discussion is dedicated to SiteGround Optimizer plugin and conflicts between its JavaScript Minification and Combination and other plugins.

I previewed jonitony.com and was able to recreate the reported issue, but the site does not have SiteGround Optimizer enabled at the moment. This means that our plugin is not responsible for the JavaScript error in question.

I would advise you to disable all plugins installed on your site one-by-one until you find which one is causing the error. After that, get in touch with its developers for further assistance.

Best Regards,
Kuzman Stoyanov