How to fix this error when posting in a vendors admin area for product

https://fantasiesrealm.com/market/
ZC version 2.1.0
list of plugins: Ceon Uri -- IH5
PHP version: 8.3
fresh install

This is the text I am trying to enter...much smaller than most of the other products in the store.

I run into this with even less text at times
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ReplaceTexture Poser 10+

PC/Mac compatible

It replaces every reference to a texture on the selected figure or object, in just two easy steps. Select the texture from the drop down list and click OK. In the Texture Manger, select a previously used texture or Browse and select a new one. You can either repeat the process for another texture, or close it by clicking Cancel This does not mess up Poser's undo cache, can always undo changes you make.

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How to increase the text allowed or fix it to not give me the error message:

Code:

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https://fantasiesrealm.com/market/admin/index.php?cmd=product&cPath=21&product_type=1&pID=679&action=new_product 172.103.65.146 /market/admin/index.php?cmd=product&cPath=21&pID=679&action=new_product_preview fantasiesrealm.com Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:136.0) Gecko/20100101 Firefox/136.0 500

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That's not an error message, that's a record in the site's raw-access logs.

I finally figured out that part when I scoured the logs/cache folders on server to find them empty. Ideas on what to do?

I also forgot to add that I am having trouble with the store page width in general.

All sideboxes are same narrow size and I have no clue which css to change it in. I forgot to look into Firefox itself and noticed the font size was 26pt so lowered it to a comfy size of 20 but everything is still not behaving. When I increase the size of the side boxes area to see the entire vendor name then it gladly does it BUT then moves everything on the right to the bottom of the page. Idea?? or I may need to change template to normal classic...LOL

Attachment 20923

OK, tis weird but I accidently figured it out by changing to the classic template and messing with the sidebox sizes there. When going back to the responsive classic template it appeared like I wanted it to be....as I said weird....LOL hope it stays that way.