Magento2: Validate class not found from basename 'StringLength'

[chat2vignesh]

Hi,

When i try to update the customer or product attributes i am getting this error message.

Validate class not found from basename 'StringLength'

It seems like namespace not working with this class file..?

Any one got same problem please reply me.

Thanks,

[daim2k5]

@chat2vignesh did you use a clean m2 installation? Do you get this error in your own extension?

[chat2vignesh]

Dear Friend,

Thank you very much for your reply,

Yes, it is happen in the clean magneto installation. I am installed the magento with sample data only.
There is no other extension or themes installed.

This issue showing when i try to save Product Attribute or Save customer from admin side.

Error showing: Validate class not found from basename 'StringLength'

Thanks,

[sevos1984]

This looks like environment issue, try updating your mysql as said here https://community.magento.com/t5/Polish/StringLength-ERROR/td-p/4434

[okorshenko]

@chat2vignesh , please, let us know if you still have an issue

[mbhuva]

Hello,

I am also facing same issue when trying to create product attribute.

if any solution please let me known.

Thanks,

[chat2vignesh]

Hi,

Yes, i found the solution for this. Big i hack the core file.

Thanks,

[daim2k5]

@chat2vignesh ok thx. So i close the issue

[magento2q]

Hi @chat2vignesh, what core file(s) did you edit?

I'm having the same issue with 'NotEmpty' with a clean installation too, when going to checkout.

[Kipperlenny]

I had to change my include_path from "." to ".:/var/www/[WHERE_EVER_YOUR_PAGE_IS]/vendor/magento/zendframework1/library"

[nikidexa]

I have the same issue... so if you solved this issue please let us konw how....

[emadha]

I noticed i'm getting this issue because of Litespeed, when i switch back to Apache it runs normal. i think it's because Litespeed runs php in a different way than apache.

It's a server related issue (in my case) and not magento.