After upgrade from 3.7 to 3.9 gives error while installing plugin "Shipping.FixedOrByWeight"

Hi all.

We upgrade from 3.7 to 3.9. When We try to install "Shipping.FixedOrByWeight" plugin, nop raises this error : There is already an object named "ShipingByWeight" in the database.

We tried below things:
1) Added text "Shipping.FixedRate" and "Shipping.ByWeight" to "InstalledPlugins.txt", so that we can uninstall these two and then install fresh plugin "Shipping.FixedOrByWeight". However after reload plugin list did not show the two plugin for uninstall. So not able to uninstall the old references/plugin.

Someone on the community suggested manually delete the Table from database "Shipping.ByWeight". Is this safe to delete the table "Shipping.ByWeight"? Actually on local machine instance We were able to install the new plugin "Shipping.FixedOrByWeight", However on live server its giving error. So i have to delete the database table "Shipping.ByWeight" on live server and then we should try to install new plugin.

does anyone face the same problem. Any suggestion how to uninstall "ShipingByWeight".

Hi,

In nopCommerce 3.9 the "Shipping.FixedRateShipping" and Shipping.ByWeight plugins are combined into a single one.

These instrctions are from the nopCommerce 3.9 upgrade ReadMe file:

Version specific steps:
7. Combine "Fixed Rate Shipping" and "Shipping by weight" plugins into single one. Upgrade instructions: do not forget to manually delete "/Plugins/Shipping.FixedRateShipping" and "/Plugins/Shipping.ByWeight" directories (they are not used anymore) and replace the plugin «Shipping.Fixed Rate» or «Shipping.ByWeight» by the plugin «Shipping.FixedOrByWeight» in the App_Data/InstalledPlugins.txt file.

Regards,
Stoyan