Issues using Dictonary & Web Storage for saving the game

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brin
- Joined 30 Jul, 2020
- 10 topics • 22 posts
1

25 Mar, 2021
Quote

Hi,

at one point in my development my local storage stopped working. I didn't really change anything about it so I'm not sure what is causing this but the console error that I'm getting is this:

Unable to use local storage, reverting to in-memory store: DOMException: A mutation operation was attempted on a database that did not allow mutations. A mutation operation was attempted on a database that did not allow mutations. 01997124-d4af-418b-b711-bcbc7ef7b3aa:3:253
 _MaybeSwitchToMemoryFallback blob:https://preview.construct.net/01997124-d4af-418b-b711-bcbc7ef7b3aa:3
 getItem blob:https://preview.construct.net/01997124-d4af-418b-b711-bcbc7ef7b3aa:4
 CheckItemExists blob:https://preview.construct.net/2ff66fae-276a-4203-bb9c-b73659fb5761:5
 _RunActions_ReturnValue blob:https://preview.construct.net/a75ee092-f4bf-45f4-b5fd-9c4ab1fc25c3:26
 _RunAndBlock blob:https://preview.construct.net/a75ee092-f4bf-45f4-b5fd-9c4ab1fc25c3:23
 Run blob:https://preview.construct.net/a75ee092-f4bf-45f4-b5fd-9c4ab1fc25c3:20
 _ExecuteTrigger blob:https://preview.construct.net/26c61692-7c56-4d71-a0cb-96939271dcf2:18
 _TriggerForClass blob:https://preview.construct.net/26c61692-7c56-4d71-a0cb-96939271dcf2:12
 _Trigger blob:https://preview.construct.net/26c61692-7c56-4d71-a0cb-96939271dcf2:11
 _Trigger blob:https://preview.construct.net/0b227ecc-4b8a-45ea-803d-36c7156a0ef5:13
 Trigger blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:81
 TriggerAsync blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:82
 _StartRunning blob:https://preview.construct.net/8b0b727a-b854-4348-b3f7-f7afb5063f34:15
 _DoChangeLayout blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:78
 _MaybeChangeLayout blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:75
 Tick blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:68
 normal blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:6
 id blob:https://preview.construct.net/bb598e4b-22ea-45d0-bd8a-db50bc03b857:18
 RequestPostAnimationFrame blob:https://preview.construct.net/bb598e4b-22ea-45d0-bd8a-db50bc03b857:18
 _RequestAnimationFrame blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:61
 Tick blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:68
 normal blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:6
 id blob:https://preview.construct.net/bb598e4b-22ea-45d0-bd8a-db50bc03b857:18
 RequestPostAnimationFrame blob:https://preview.construct.net/bb598e4b-22ea-45d0-bd8a-db50bc03b857:18
 _RequestAnimationFrame blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:61
 Tick blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:68
 normal blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:6
 id blob:https://preview.construct.net/bb598e4b-22ea-45d0-bd8a-db50bc03b857:18
 RequestPostAnimationFrame blob:https://preview.construct.net/bb598e4b-22ea-45d0-bd8a-db50bc03b857:18
 _RequestAnimationFrame blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:61
 Tick blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:68
 normal blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:6
 id blob:https://preview.construct.net/bb598e4b-22ea-45d0-bd8a-db50bc03b857:18
 RequestPostAnimationFrame blob:https://preview.construct.net/bb598e4b-22ea-45d0-bd8a-db50bc03b857:18
 _RequestAnimationFrame blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:61
 Tick blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:68
 normal blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:6
 id blob:https://preview.construct.net/bb598e4b-22ea-45d0-bd8a-db50bc03b857:18
 RequestPostAnimationFrame blob:https://preview.construct.net/bb598e4b-22ea-45d0-bd8a-db50bc03b857:18
 _RequestAnimationFrame blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:61
 Tick blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:68
 normal blob:https://preview.construct.net/2a98e0ee-c496-4714-98d0-c40caa5b8e61:6
 id blob:https://preview.construct.net/bb598e4b-22ea-45d0-bd8a-db50bc03b857:18

At the start of the game I'm doing this:

the only other time I touch local storage is here (this does not get called when the error is thrown into the console, it gets thrown at the start of the game)

and here are the project settings I'm using:

- dop2000
- - Joined 26 May, 2016
  - 134 topics • 12,083 posts
- 1
- 25 Mar, 2021
- Quote
Does this happen on other computers or browsers? Try temporarily adding "Local Storage Clear" to the very start of the project and run once. If LS is corrupted, this should fix it.
- Ashley Construct Team Founder
- Moderator
- - Joined 21 May, 2007
  - 668 topics • 30,058 posts
- 1
- 25 Mar, 2021
- Quote
That error ("A mutation operation was attempted on a database...") is what you get when you disable websites being able to store any data locally in Firefox settings. I think the option is called "never remember history" or something, or it might be some other tracking prevention feature. If you block any website storing data, then your project can't store any data either.

brin
- Joined 30 Jul, 2020
- 10 topics • 22 posts
1

27 Mar, 2021
Quote

Hi thanks for the answers,

it is definitely not Firefox's fault. I run into the same issue on microsoft edge.

If you could check out the console output yourselves here is the link to the game: newgrounds.com/portal/view/786047

And here is the .c3p file of the game: mega.nz/file/JFgxRQ4Y

Here is the console log:

[Construct 3] Error parsing JSON: SyntaxError: Unexpected token d in JSON at position 0
 at JSON.parse (<anonymous>)
 at DictionaryInstance.JSONLoad (c3runtime.js:2962)
 at Action._RunObject_ParamsDontVary (c3runtime.js:1827)
 at EventBlock._RunActions_Fast (c3runtime.js:1694)
 at EventBlock._RunAndBlock (c3runtime.js:1692)
 at EventBlock.Run (c3runtime.js:1689)
 at EventSheet._ExecuteTrigger (c3runtime.js:1662)
 at EventSheet._TriggerForClass (c3runtime.js:1656)
 at EventSheet._Trigger (c3runtime.js:1655)
 at EventSheetManager._Trigger (c3runtime.js:1626)
JSONLoad  c3runtime.js:2962
_RunObject_ParamsDontVary  c3runtime.js:1827
_RunActions_Fast  c3runtime.js:1694
_RunAndBlock  c3runtime.js:1692
Run  c3runtime.js:1689
_ExecuteTrigger  c3runtime.js:1662
_TriggerForClass  c3runtime.js:1656
_Trigger  c3runtime.js:1655
_Trigger  c3runtime.js:1626
Trigger  c3runtime.js:2383
TriggerAsync  c3runtime.js:2384
TriggerAsync  c3runtime.js:1930
(anonymous)  c3runtime.js:2989
_MaybeStartNext  c3runtime.js:572
(anonymous)  c3runtime.js:571
Add  c3runtime.js:571
ScheduleTriggers  c3runtime.js:2386
ScheduleTriggers  c3runtime.js:1930
CheckItemExists  c3runtime.js:2989
async function (async)
CheckItemExists  c3runtime.js:2988
_RunActions_ReturnValue  c3runtime.js:1695
_RunAndBlock  c3runtime.js:1692
Run  c3runtime.js:1689
_ExecuteTrigger  c3runtime.js:1662
_TriggerForClass  c3runtime.js:1656
_Trigger  c3runtime.js:1655
_Trigger  c3runtime.js:1626
Trigger  c3runtime.js:2383
TriggerAsync  c3runtime.js:2384
_StartRunning  c3runtime.js:1150
async function (async)
_StartRunning  c3runtime.js:1149
_DoChangeLayout  c3runtime.js:2380
async function (async)
_DoChangeLayout  c3runtime.js:2379
_MaybeChangeLayout  c3runtime.js:2377
Tick  c3runtime.js:2370
normal  c3runtime.js:2308
(anonymous)  c3runtime.js:355
async function (async)
(anonymous)  c3runtime.js:355
requestAnimationFrame (async)
RequestPostAnimationFrame  c3runtime.js:355
_RequestAnimationFrame  c3runtime.js:2363
Tick  c3runtime.js:2370
normal  c3runtime.js:2308
(anonymous)  c3runtime.js:355
async function (async)
(anonymous)  c3runtime.js:355
requestAnimationFrame (async)
RequestPostAnimationFrame  c3runtime.js:355
_RequestAnimationFrame  c3runtime.js:2363
Tick  c3runtime.js:2370
normal  c3runtime.js:2308
(anonymous)  c3runtime.js:355
async function (async)
(anonymous)  c3runtime.js:355
requestAnimationFrame (async)
RequestPostAnimationFrame  c3runtime.js:355
_RequestAnimationFrame  c3runtime.js:2363
Tick  c3runtime.js:2370
normal  c3runtime.js:2308
(anonymous)  c3runtime.js:355
async function (async)
(anonymous)  c3runtime.js:355
requestAnimationFrame (async)
RequestPostAnimationFrame  c3runtime.js:355
_RequestAnimationFrame  c3runtime.js:2363
Tick  c3runtime.js:2370
normal  c3runtime.js:2308
(anonymous)  c3runtime.js:355
async function (async)
(anonymous)  c3runtime.js:355
requestAnimationFrame (async)
RequestPostAnimationFrame  c3runtime.js:355
_RequestAnimationFrame  c3runtime.js:2363
Tick  c3runtime.js:2370
normal  c3runtime.js:2308
(anonymous)  c3runtime.js:355
async function (async)
(anonymous)  c3runtime.js:355
requestAnimationFrame (async)
RequestPostAnimationFrame  c3runtime.js:355
_RequestAnimationFrame  c3runtime.js:2363
Tick  c3runtime.js:2370
normal  c3runtime.js:2308
(anonymous)  c3runtime.js:355
async function (async)
(anonymous)  c3runtime.js:355
requestAnimationFrame (async)
RequestPostAnimationFrame  c3runtime.js:355
_RequestAnimationFrame  c3runtime.js:2363
Tick  c3runtime.js:2370
normal  c3runtime.js:2308
(anonymous)  c3runtime.js:355
async function (async)
(anonymous)  c3runtime.js:355
requestAnimationFrame (async)
RequestPostAnimationFrame  c3runtime.js:355
_RequestAnimationFrame  c3runtime.js:2363
Tick  c3runtime.js:2370
normal  c3runtime.js:2308
(anonymous)  c3runtime.js:355
async function (async)
(anonymous)  c3runtime.js:355
requestAnimationFrame (async)
RequestPostAnimationFrame  c3runtime.js:355
_RequestAnimationFrame  c3runtime.js:2363
Tick  c3runtime.js:2370
normal  c3runtime.js:2308
(anonymous)  c3runtime.js:355
async function (async)
(anonymous)  c3runtime.js:355
requestAnimationFrame (async)
RequestPostAnimationFrame  c3runtime.js:355
_RequestAnimationFrame  c3runtime.js:2363
Tick  c3runtime.js:2370
normal  c3runtime.js:2308
(anonymous)  c3runtime.js:355
async function (async)
(anonymous)  c3runtime.js:355
requestAnimationFrame (async)
RequestPostAnimationFrame  c3runtime.js:355
_RequestAnimationFrame  c3runtime.js:2363
Tick  c3runtime.js:2370
normal  c3runtime.js:2308
(anonymous)  c3runtime.js:355
async function (async)
(anonymous)  c3runtime.js:355
requestAnimationFrame (async)
RequestPostAnimationFrame  c3runtime.js:355
_RequestAnimationFrame  c3runtime.js:2363
Tick  c3runtime.js:2370
normal  c3runtime.js:2308
(anonymous)  c3runtime.js:355
async function (async)
(anonymous)  c3runtime.js:355
requestAnimationFrame (async)
RequestPostAnimationFrame  c3runtime.js:355
_RequestAnimationFrame  c3runtime.js:2363
Tick  c3runtime.js:2370
normal  c3runtime.js:2308
(anonymous)  c3runtime.js:355
async function (async)
(anonymous)  c3runtime.js:355
requestAnimationFrame (async)
RequestPostAnimationFrame  c3runtime.js:355
_RequestAnimationFrame  c3runtime.js:2363
Tick  c3runtime.js:2370
normal  c3runtime.js:2308
(anonymous)  c3runtime.js:355
async function (async)
(anonymous)  c3runtime.js:355

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- Ashley Construct Team Founder
- Moderator
- - Joined 21 May, 2007
  - 668 topics • 30,058 posts
- 1
- 27 Mar, 2021
- Quote
Your last post has a different error message, so looks like an unrelated issue.

I am pretty sure that if you get an error writing to storage, it's because the browser settings have been changed to block storage.
- brin
- - Joined 30 Jul, 2020
  - 10 topics • 22 posts
- 1
- 28 Mar, 2021
- Quote
Thanks for the responses!

The issue was not with browsers, it was with my code.

I was trying to load LocalStorage.Key instead of LocalStorage.ItemValue

It works now!