What blocks the functionality of the voting plugin and how can it be fixed?

Question

JavaScript

Hello! I have a wordpress site with the wp vote plugin installed . Until recently, it worked properly, but a couple of days ago it stopped on this page , the form for adding an ad is not displayed and the modal window with lightbox is not called, probably due to the fact that some plugin appends ?lightbox to the end of the link

<div align="center" class="unit_pic"> <a name="photo-390" class="nofancybox fv_lightbox nolightbox" rel="fw" href="http://adt.by/wp-content/uploads/2016/08/Screenshot_2016-08-22-21-41-06.png?lightbox" title="Юлия" style="cursor: pointer;"> <img src="http://adt.by/wp-content/uploads/2016/08/Screenshot_2016-08-22-21-41-06-150x150.png" width="150" height="150" class="attachment-thumbnail"> </a></div>

because it's not on the demo plugin page

<a name="photo-1" data-id="1" class=" fv_lightbox nolightbox no-lightbox noLightbox" rel="fw" href="http://res.cloudinary.com/dxo61viuo/image/upload/v1437299571/bmw_m5_2012_bvhksf.jpg" title="Photo 1" data-title="Photo 1 <br/>Vote count: <span class='sv_votes_1'>1514</span>">
<img src="http://res.cloudinary.com/dxo61viuo/image/upload/v1437299571/bmw_m5_2012_bvhksf.jpg" width="300" height="188" class="clg-cover-image" alt="Photo 1"> </a>

Disabled the obvious plugins themselves that may conflict - there is no result yet
in the logs

[Wed Sep 28 00:01:20 2016] [error] [client 103.254.255.131] mod_rewrite: maximum number of internal redirects reached. Assuming configuration error. Use 'RewriteOptions MaxRedirects' to increase the limit if neccessary.

[Wed Sep 28 00:01:23 2016] [error] [client 103.254.255.131] mod_rewrite: maximum number of internal redirects reached. Assuming configuration error. Use 'RewriteOptions MaxRedirects' to increase the limit if neccessary.

[Wed Sep 28 01:25:48 2016] [error] [client 66.249.75.60] ALERT - maximum execution depth reached - script terminated (attacker '66.249.75.60', file '/home/adtby1/www/adt.by/wp-includes/pluggable.php', line 69)
[Wed Sep 28 00:25:15 2016] [error] [client 141.8.132.40] ALERT - script tried to disable memory_limit by setting it to a negative value -1 bytes which is not allowed (attacker '141.8.132.40', file '/home/adtby1/www/adt.by/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/modules/nextgen_data/package.module.nextgen_data.php', line 3901)

Answer 1

Read what they write in error.log
Perhaps there will be something useful related to php errors.