Call to undefined function image_slider_show()

Looks like a slider plugin was removed or deactivated but there’s still a reference to it in your theme’s index.php. Open the file in a text editor and remove the reference, or re-install/reactivate the slider.

True, the plugin was not activated, but when i activate, the error is still there
below is the index.php file contents

<?php get_header() ?>
<div id=”sliders”>
<?php if(function_exists(image_slider_show())){image_slider_show();}?>
</div>
<div id=”container”>

<div id=”content”>
<div class=”home-page-column”>
<?php if ( function_exists(‘dynamic_sidebar’)&& dynamic_sidebar(‘Home Page First Column’) ) : endif; ?>
</div>
<div class=”home-page-column”>
<?php if ( function_exists(‘dynamic_sidebar’)&& dynamic_sidebar(‘Home Page Second Column’) ) : endif; ?>
</div>

</div><!– #content –>
</div><!– #container –>

<?php get_sidebar() ?>
<?php get_footer() ?>

when i remove the reference, the site is back up but the slider is not there

Did the function name change? Did you install a different slider?

Havent installed a different slider, your perception makes sense, below is the link to
image-slider/slider.php content. dont seem to find the image_slider_show function

https://pastebin.com/5A5GruP5

how do i identify the changed function name?

You should have posted all the above at pastebin.com and provided the link.

If you look at what you posted, you’ll find this:

<div class="wholeform">
<h4> call this function in template file to show slideshow as_tejus_show_slideshow();</h4>

<h4>OR use this shortcode [as_tejus_slides] in posts or pages.</h4>
</div>

ok. Pasted it on pastebin.com and provided the link.
So what about the <div class=”wholeform”> ? i dont follow

I quoted what you’d posted back at you. I’ll strip it even further:

call this function in template file to show slideshow as_tejus_show_slideshow(); OR use this shortcode [as_tejus_slides] in posts or pages.

So i have done as you instructed on the function, the site is back on, but the slider images are not showing.

<div id=”sliders”>
<?php if(function_exists(as_tejus_show_slideshow())){as_tejus_show_slideshow();}?>
</div>

https://cio100.cio.co.ke/

Is the slider a custom plugin? It looks like it’s a customised Anything Slider install. Where did you download it from?

actually i dont know who did the site, was refered to help wih the situation after the error appeared. so as of now, i dont know where the slider was downloaded. cant seem to find it when i search for plugins in wordpress dashboard or the website that it refers to as well. seems the support for the plugin stopped.

I think your best course of action would be to grab a new slider plugin. This one’s nice:

https://www.ads-software.com/plugins/soliloquy-lite/

Thankyou very much for your help Ranger. I will surely do so
Shukran (swahili word for thankyou)