# Exception in defer callback: RangeError: Maximum call stack size exceeded

**URL:** <https://forums.rocket.chat/t/exception-in-defer-callback-rangeerror-maximum-call-stack-size-exceeded/1555>\
**Category:** Community Support\
**Created:** [July 10, 2018, 2:43pm UTC](https://forums.rocket.chat/t/exception-in-defer-callback-rangeerror-maximum-call-stack-size-exceeded/1555 "2018-07-10T14:43:50Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![aaron.ogle](https://sea1.discourse-cdn.com/flex021/user_avatar/forums.rocket.chat/aaron.ogle/32/15_2.png) [@aaron.ogle](https://forums.rocket.chat/u/aaron.ogle)\
**Post date:** [July 10, 2018, 4:43pm UTC](https://forums.rocket.chat/t/exception-in-defer-callback-rangeerror-maximum-call-stack-size-exceeded/1555/2 "2018-07-10T16:43:32Z")

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> [@jdennis](#):
>
> We are running on the “snap” version of rocketchat 0.66.2, database migration 129. We did have the update to 0.66.1 I believe it was get stuck when upgrading due to the database migration issue. We believe that to be resolved at this point best we can tell.

Did you resolve like found in [Snap migration failed for 0.66.1](https://forums.rocket.chat/t/snap-migration-failed-for-0-66-1/1505) ?

> [@jdennis](#):
>
> We are also using hubot-rocketchat through a docker image for some software integration, in case that also may be related.

What type of things are you doing with hubot? Are you inserting messages? Other than hubot do you have any inbound or outbound integrations?

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