VM 3.8.8.10472: Missing format specifier at end of string - product card in BE

[stawebnice]

Hi,

I just tested VM 3.8.8.10472 on Joomla 3.10.5 and PHP 8 and even though front-end does not show any errors, when I try to open product card in administration, I get this error:
Missing format specifier at end of string

Is it a bug or is this version not compatible with PHP 8?

Thanks!

Petra

[Jörgen]

Try to change to English, prob Still there ?

Jörgen

[Jumbo!]

It is a PHP 8 related issue. You have to wait until VirtueMart becomes fully compatible with PHP 8.

Downgrade to PHP 7, which should resolve the issue.

[pinochico]

It is a PHP 8 related issue. You have to wait until VirtueMart becomes fully compatible with PHP 8.

Downgrade to PHP 7, which should resolve the issue.

Yes, the problem is reported on the any forum:
https://forum.virtuemart.de/thread/3990-fehlermeldung-wenn-man-ein-produkt-aufrufen-ändern-möchte/
https://forum.joomla.de/thread/13216-probleme-mit-virtuemart/
https://forum.joomla.org/viewtopic.php?t=985113

but not fixed in last version (com_virtuemart.3.8.9.10583_package_or_extract.zip) too.

We are waiting not downgrade

[stawebnice]

@jorgen switching to English on Czech site is not a solution.
Yes, downgrading to 7.4 solves the issue.  But still looking forward to the full compatibility with PHP 8. Because it looks like all my other extensions are compatible... so I can't wait

[Jörgen]

@stawebnice

I did not mean to switch to english permanently, problems with translations have been known to create issues. And switching to english in back end is a very fast test to rule out language issues. This time it seems to be a an PHP 8 issue.

Quote from the Joomla forum:

Anyhow it is most likely a mistake in the "other" software and not in VM. VM works just fine...Are you using PHP 8 if so set back to PHP 7.4 in your hosting control panel. PHP8 is not yet Stable

Jörgen @ Kreatuv Fotografi

[stawebnice]

Yes, from front-end it looks fine, so if we wouldn't need to update a product, we would hardly notice it...

[Milbo]

The reason is the missing $ in the placeholders.
%s, %1s, %d, and so on must become %1$s, respectivly %1$d. and of course the given number must preserved. Just the "old" rule, php8 is more restrictiv than php7

[dandyse]

Ehm ... no ... it must be $%1s NOT %1$s.

[StefanSTS]

Ehm ... no ... it must be $%1s NOT %1$s.

Really? The PHP docs say it the same way Milbo says.
You might want to quote a reliable source.

Stefan

[Milbo]

It is really freaky topic, this guys say the % must go completly?

https://wordpress.org/support/topic/uncaught-valueerror-missing-format-specifier-at-end-of-string/

At least they suffer the same problem. But I really wonder how joomla does it, why they do not have that hassle. So we have not solved all mysteries here

[pico71]

I Have the same error In MY JOOMLA\Virtuemart installation
JOOMLA 3.10.11
VM: 4.0.12

Editing a product from backend give me this error:
"Missing format specifier at end of string"

Looking into the VM folder language (Administrator and Component) - I have only the gb-EN LANGuages (even if my JOOMLA site is ITALIAN\ENGLISH).
Whick file have I check\correct to solve this issue ?
P.

[niosme]

I fixed that by commenting the lines 142 till 146 in /administrator/components/com_virtuemart/helpers/vmtext.php.
Or take the attached file unzip it and replace it to the path above get that fixed.

Dont know if this the right solution but fixed the problem and everything works like a charm!

[razor7]

Thanks a lot! Updating VM lang packs solved the issue

[Milbo]

Thank you Niosme, gave me a grib to find a solution for it.