Describe the bug
Hello, I used Jaina's Locket inside of the Molten Core (At Golemagg) and received this error.

Do you have an error log of what happened?
Message: Interface\AddOns\SavedInstances\Modules\Calling.lua:60: attempt to index field '?' (a nil value)
Time: Wed Mar 31 10:01:36 2021
Count: 6
Stack: Interface\AddOns\SavedInstances\Modules\Calling.lua:60: attempt to index field '?' (a nil value)
[string "=(tail call)"]: ?
[string "@interface\AddOns\SavedInstances\Modules\Calling.lua"]:60: in function ?' [string "@Interface\AddOns\Masque\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua"]:119: in function <...que\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:119> [string "=[C]"]: ? [string "@Interface\AddOns\Masque\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua"]:29: in function <...que\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:25> [string "@Interface\AddOns\Masque\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua"]:64: in function Fire'
[string "@interface\AddOns\Bartender4\libs\AceEvent-3.0\AceEvent-3.0.lua"]:120: in function <...AddOns\Bartender4\libs\AceEvent-3.0\AceEvent-3.0.lua:119>

Locals:

To Reproduce

Screenshots

Did you try having SavedInstances as the only enabled addon and everything else (especially something like ElvUI) disabled?
Yes

Which version of SavedInstances are you using?
9.0.7

Was it working in a previous version? If yes, which was the last good one?

Additional context

Fixed in e8c7869, please try out latest alpha.