# Ignition 7.6 store and forward stuck

**URL:** <https://forum.inductiveautomation.com/t/ignition-7-6-store-and-forward-stuck/34903>\
**Category:** Ignition\
**Created:** [May 20, 2020, 7:06am UTC](https://forum.inductiveautomation.com/t/ignition-7-6-store-and-forward-stuck/34903 "2020-05-20T07:06:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![cristihcd](https://avatars.discourse-cdn.com/v4/letter/c/7bcc69/32.png) [@cristihcd](https://forum.inductiveautomation.com/u/cristihcd)\
**Post date:** [May 20, 2020, 7:06am UTC](https://forum.inductiveautomation.com/t/ignition-7-6-store-and-forward-stuck/34903/1 "2020-05-20T07:06:53Z")

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Hello,

We have a system where the store and forward system is stuck - not forwarding history to the database:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/c/cfa188b1f0b696b7d2b518eda91c6d5f6ccdf1cb.png)

The datacache folder has 7gb. I know I can delete the cache folder, however I would like to recover the history stored there.

Also, I can not store any new history. It goes directly to quarantine.

I tried opening the sqlite database but I don’t know the password.

Do you have any suggestions?

Thanks.

Edit:  
The error from wrapper.log:

```auto
INFO | jvm 1 | 2020/05/20 10:08:56 | ERROR [HSQLDataStore] [10:08:55,954]: Error deserializing data from data store.
INFO | jvm 1 | 2020/05/20 10:08:56 | java.lang.IllegalStateException: Cannot create ModuleObjectInputStream with a null module manager.
INFO | jvm 1 | 2020/05/20 10:08:56 | at com.inductiveautomation.ignition.gateway.cluster.ModuleObjectInputStream.<init>(ModuleObjectInputStream.java:30)
INFO | jvm 1 | 2020/05/20 10:08:56 | at com.inductiveautomation.ignition.gateway.cluster.ClusterUtil.deserializeObject(ClusterUtil.java:59)
INFO | jvm 1 | 2020/05/20 10:08:56 | at com.inductiveautomation.ignition.gateway.cluster.ClusterUtil.deserializeObject(ClusterUtil.java:52)
INFO | jvm 1 | 2020/05/20 10:08:56 | at com.inductiveautomation.ignition.gateway.history.stores.AbstractDatasourceStore.deserializeObject(AbstractDatasourceStore.java:495)
INFO | jvm 1 | 2020/05/20 10:08:56 | at com.inductiveautomation.ignition.gateway.history.stores.AbstractDatasourceStore.loadTransactions(AbstractDatasourceStore.java:553)
INFO | jvm 1 | 2020/05/20 10:08:56 | at com.inductiveautomation.ignition.gateway.history.stores.AbstractDatasourceStore.syncdTakeNext(AbstractDatasourceStore.java:510)
INFO | jvm 1 | 2020/05/20 10:08:56 | at com.inductiveautomation.ignition.gateway.history.stores.AbstractStore.takeNext(AbstractStore.java:200)
INFO | jvm 1 | 2020/05/20 10:08:56 | at com.inductiveautomation.ignition.gateway.history.stores.MultiStageStore.syncdTakeNext(MultiStageStore.java:170)
INFO | jvm 1 | 2020/05/20 10:08:56 | at com.inductiveautomation.ignition.gateway.history.stores.AbstractStore.takeNext(AbstractStore.java:200)
INFO | jvm 1 | 2020/05/20 10:08:56 | at com.inductiveautomation.ignition.gateway.history.forwarders.ForwarderThread.synchedTakeNext(ForwarderThread.java:196)
INFO | jvm 1 | 2020/05/20 10:08:56 | at com.inductiveautomation.ignition.gateway.history.forwarders.RedundancyAwareForwarder.synchedTakeNext(RedundancyAwareForwarder.java:68)
INFO | jvm 1 | 2020/05/20 10:08:56 | at com.inductiveautomation.ignition.gateway.history.forwarders.ForwarderThread.run(ForwarderThread.java:128)

```

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<div class="post-metadata">

**Author:** ![shibubalaji](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/shibubalaji/32/9165_2.png) [@shibubalaji](https://forum.inductiveautomation.com/u/shibubalaji)\
**Post date:** [May 20, 2020, 8:15pm UTC](https://forum.inductiveautomation.com/t/ignition-7-6-store-and-forward-stuck/34903/2 "2020-05-20T20:15:13Z")

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What backend you are using? Can you verify that service is running? You may check that in services, if your server is on windows platform.