Bag after updating from 4.18.5 to 4.18.6 Creating default object from empty value

Bag after updating from 4.18.5 to 4.18.6 Creating default object from empty value

Hi.
After updating to version 4.18.6, the following problems occur:
If php 7.4 FastCGI
and Joomla SEF - ON

In the product card, the choice of attributes ceased to recalculate the price.

When adding goods to the basket, the following warning appears:

Warning: Creating default object from empty value in .../components/com_jshopping/router.php on line 242

If php 7.4 FastCGI
and Joomla SEF - OFF
Everything works without bugs.

If php 7.3 FastCGI
and Joomla SEF - ON or OFF
Everything works without bugs.

Version 4.18.5 worked without any problems with php 7.4 FastCGI and Joomla SEF - ON or OFF.
Thus, it turns out that the new version of JoomShopping requires a decrease in PHP version to get rid of errors.
I think it requires urgent correction.

Aw: Bag after updating from 4.18.5 to 4.18.6 Creating default object from empty value

Use joomshopping for install fix: (JoomShopping / Install & Update)
joomshopping_4.18.6_fix.zip

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Aw: Bag after updating from 4.18.5 to 4.18.6 Creating default object from empty value

Hi. Thanks. The problem is solved