It runs on my testsite using J6 en Naomi template

I can confirm that there's a display error with Joomla 6.02 and J51_news 3.0.13.
For me, the featured images weren't displaying correctly. The individual resizing options for the views (mobile, desktop, tablet, etc.) were also doing the wrong thing.

I added the following code to the specific template style, making sure to include the "important" attribute!
However, this might not solve your problem.

@media only screen and (min-width: 960px) and (max-width: 1280px) {

.j51news966 .newsitem {width:30.00300030003% !important;}

}

@media only screen and (min-width: 768px) and (max-width: 959px) {

.j51news966 .newsitem {width:100% !important;}

}

@media only screen and ( max-width: 767px ) {

.j51news966 .newsitem {width:100% !important;}

}

@media only screen and (max-width: 440px) {

.j51news966 .newsitem {width:100% !important;}

}

To resolve it, we definitely need the exact error message and a link to the problem; perhaps someone can help with that!

Did you insert the code directly into the news module or into the custom CSS in the template?

into the custom CSS in the template stile...

Does an error message appear when the module is activated in the frontend if the error display is set to maximum? It would be better to fix the error within the module itself...

I am at a loss.
I tried several things with no solution. I even set up a new instance with Joomla J5.4 running... same here Module J51_News is not rendered.

In modules/mod_j51news/tmpl/default.php I added an error_log(__FILE__) which does not appear in log file. The same with mod_j51layersliedshow will add an entry.

What confuses me most is, it seems the module is rendered by Joomla but with no result as you can see in the backtrace.

afterInitialise (10.91MB) (68.61ms)

afterRoute (54.41KB) (1.85ms)

beforeRenderComponent com_content (1.18MB) (9.82ms)

Before Access:reloadComponents (all components) (1014.41KB) (6.97ms)

After Access:reloadComponents (all components) (123.64KB) (1.01ms)

Before Access::getAssetRules (id:8 name:com_content) (56B) (23μs)

After Access::getAssetRules (id:8 name:com_content) (26.1KB) (271μs)

afterRenderComponent com_content (1.08MB) (10.98ms)

afterDispatch (4.48KB) (120μs)

beforeRenderRawModule mod_menu () (369.46KB) (6.06ms)

afterRenderRawModule mod_menu () (587.24KB) (6.66ms)

beforeRenderModule mod_menu () (680B) (14μs)

afterRenderModule mod_menu () (93.48KB) (1.39ms)

beforeRenderRawModule mod_menu () (1.06KB) (60μs)

afterRenderRawModule mod_menu () (41.41KB) (1.06ms)

beforeRenderModule mod_menu () (680B) (8μs)

afterRenderModule mod_menu () (11.36KB) (203μs)

beforeRenderRawModule mod_menu () (1.16KB) (47μs)

afterRenderRawModule mod_menu () (41.41KB) (628μs)

beforeRenderModule mod_menu () (680B) (6μs)

afterRenderModule mod_menu () (10.73KB) (137μs)

beforeRenderRawModule mod_j51news (News) (1.07MB) (6.46ms)

afterRenderRawModule mod_j51news (News) (6.02KB) (171μs)

beforeRenderModule mod_j51news (News) (704B) (5μs)

afterRenderModule mod_j51news (News) (10.37KB) (271μs)

beforeRenderRawModule mod_j51layerslideshow (SlideShow) (18.22KB) (231μs)

afterRenderRawModule mod_j51layerslideshow (SlideShow) (155.02KB) (1.62ms)

beforeRenderModule mod_j51layerslideshow (SlideShow) (720B) (6μs)

afterRenderModule mod_j51layerslideshow (SlideShow) (12.29KB) (247μs)

Can't be that hard to configure this module

Check the override:

templates/<tpl>/html/mod_j51news/default.php
If it exists: This is the file you need to edit.

Additionally check: If a different layout is selected in the module, the file might also be named something like:

default_xyz.php (also in the override folder)

Check the override:

templates/<tpl>/html/mod_j51news/default.php
If it exists: This is the file you need to edit.

Override does not exist. But mod_j51layerslideshow which works fine, does.

I now reinstalled J51_News from an other Template (Bianca) in version 3.0.12 and now it works

3.0.13 and 3.0.14 didn't.

And does it also work with your Layla template under Joomla 6?