We have fixed that problem and uploaded the new upgrade packages for Multi-Vendor. Upgrade should be possible now. Here's how:
1. On your test 4.9.3 SP1 installation, go to the Upgrade Center.
2. Click the gear button and choose Refresh available upgrades.
3. Re-download the upgrade to 4.10.1 RC1 and install it.
Thank you ikoshkin for your reply.
I am not able to upgrade due to another issue in different file. I recieved the below error message:
Upgrade process of your store has failed
Please restore the pre-upgrade backup manually or via a link sent to your email address, then contact our technical support.
Tech details: Couldn't complete migration 20190326181933_core_add_storefront_settings_fallbacks.php. Reason: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1.
Completed migrations: 38 out of 45
This error already been mentioned in my ealier conversation with Soft-Solid. Please see here: #71
and here: #73
Appreciate your further coordination!
Regards,
Alaa