I receive below error when starting the game. There is also a large 0 in the middle of the screen, with space around it where you can't click to move the camera or your character.

21x ...eDragonridingJournal/DragonridingJournal.lua:1051: attempt to call global 'IsAddOnLoaded' (a nil value)
[string "@DragonridingJournal/DragonridingJournal.lua"]:1051: in function <...eDragonridingJournal/DragonridingJournal.lua:1050>
[string "=[C]"]: ?
[string "@Accountant/Libs/AceAddon-3.0-13/AceAddon-3.0.lua"]:66: in function <Accountant/Libs/AceAddon-3.0/AceAddon-3.0.lua:61>
[string "@Accountant/Libs/AceAddon-3.0-13/AceAddon-3.0.lua"]:523: in function EnableAddon' [string "@Accountant/Libs/AceAddon-3.0-13/AceAddon-3.0.lua"]:626: in function <Accountant/Libs/AceAddon-3.0/AceAddon-3.0.lua:611> [string "=[C]"]: ? [string "=[C]"]: in function LoadAddOn'
[string "@ArkInventory/Core/ArkInventoryClient.lua"]:935: in function LoadAddOn' [string "@ArkInventory/Core/ArkInventory.lua"]:13471: in function LoadAddOn'
[string "@ArkInventory/Core/ArkInventory.lua"]:13494: in function BlizzardAPIHook' [string "@ArkInventory/Core/ArkInventory.lua"]:3137: in function <ArkInventory/Core/ArkInventory.lua:3093> [string "=[C]"]: ? ... [string "@Blizzard_UIParent/Mainline/UIParent.lua"]:422: in function UIParentLoadAddOn'
[string "@Blizzard_UIParent/Mainline/UIParent.lua"]:627: in function MajorFactions_LoadUI' [string "@Blizzard_ExpansionLandingPage/Blizzard_DragonflightLandingPage.lua"]:103: in function SetUpMajorFactionList'
[string "@Blizzard_ExpansionLandingPage/Blizzard_DragonflightLandingPage.lua"]:96: in function RefreshMajorFactionList' [string "@Blizzard_ExpansionLandingPage/Blizzard_DragonflightLandingPage.lua"]:91: in function RefreshOverlay'
[string "@Blizzard_ExpansionLandingPage/Blizzard_DragonflightLandingPage.lua"]:83: in function <...sionLandingPage/Blizzard_DragonflightLandingPage.lua:79>
[string "=[C]"]: in function CreateFrame' [string "@Blizzard_ExpansionLandingPage/Blizzard_DragonflightLandingPage.lua"]:49: in function CreateOverlay'
[string "@Blizzard_ExpansionLandingPage/Blizzard_ExpansionLandingPage.lua"]:78: in function `RefreshExpansionOverlay'
[string "@Blizzard_ExpansionLandingPage/Blizzard_ExpansionLandingPage.lua"]:37: in function <...pansionLandingPage/Blizzard_ExpansionLandingPage.lua:35>

Locals:
self =

{
modules = {
}
baseName = "DragonridingJournal"
defaultModuleState = true
Frame = {
}
db = {
}
fontStrings = {
}
enabledState = true
Data = {
}
defaultModuleLibraries = {
}
optionsFrame = Frame {
}
name = "DragonridingJournal"
orderedModules = {
}
DataBroker = {
}
hooks = {
}
}
(*temporary) = nil
(*temporary) = "Blizzard_WorldMap"
(*temporary) = "attempt to call global 'IsAddOnLoaded' (a nil value)"
addon = {
modules = {
}
baseName = "DragonridingJournal"
defaultModuleState = true
Frame = {
}
db = {
}
fontStrings = {
}
enabledState = true
Data = {
}
defaultModuleLibraries = {
}
optionsFrame = Frame {
}
name = "DragonridingJournal"
orderedModules = {
}
DataBroker = {
}
hooks = {
}
}
LSM = {
OverrideMedia = {
}
callbacks = {
}
LOCALE_BIT_zhTW = 8
LOCALE_BIT_ruRU = 2
MediaType = {
}
LOCALE_BIT_western = 128
MediaTable = {
}
LOCALE_BIT_zhCN = 4
DefaultMedia = {
}
MediaList = {
}
LOCALE_BIT_koKR = 1
}
addonName = "DragonridingJournal"