# Json str error when reopen the closed tab

**URL:** https://forum.mautic.org/t/json-str-error-when-reopen-the-closed-tab/4713
**Category:** Development
**Created:** [August 2, 2016, 5:40am UTC](https://forum.mautic.org/t/json-str-error-when-reopen-the-closed-tab/4713 "2016-08-02T05:40:29Z")
**Posts on this page:** 6
**Page:** 1

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### Author: ![youyang](https://avatars.discourse-cdn.com/v4/letter/y/4491bb/32.png) [@youyang](https://forum.mautic.org/u/youyang)
#### Post date: [August 2, 2016, 5:40am UTC](https://forum.mautic.org/t/json-str-error-when-reopen-the-closed-tab/4713/1 "2016-08-02T05:40:29Z")

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Code:

{ route: "/s/login", mauticContent: "user", sessionExpired: true, flashes: "", notifications: { content: "", lastId: null, hasNewNotifications: false, updateAvailable: false }, browserNotifications: [], newContent: "

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### Author: ![youyang](https://avatars.discourse-cdn.com/v4/letter/y/4491bb/32.png) [@youyang](https://forum.mautic.org/u/youyang)
#### Post date: [August 2, 2016, 5:40am UTC](https://forum.mautic.org/t/json-str-error-when-reopen-the-closed-tab/4713/2 "2016-08-02T05:40:29Z")

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`{
route: "/s/login",
mauticContent: "user",
sessionExpired: true,
flashes: "",
notifications: {
content: "",
lastId: null,
hasNewNotifications: false,
updateAvailable: false
},
browserNotifications: [],
newContent: " <div class="content-body"> <div class="page-header"> <div class="box-layout"> <div class="col-xs-5 col-sm-6 col-md-5 va-m">`

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### Author: ![escopecz](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/escopecz/32/370_2.png) [@escopecz](https://forum.mautic.org/u/escopecz)
#### Post date: [August 3, 2016, 7:49am UTC](https://forum.mautic.org/t/json-str-error-when-reopen-the-closed-tab/4713/3 "2016-08-03T07:49:10Z")

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?? What tab ?? Steps to reproduce ??

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### Author: ![youyang](https://avatars.discourse-cdn.com/v4/letter/y/4491bb/32.png) [@youyang](https://forum.mautic.org/u/youyang)
#### Post date: [August 3, 2016, 9:46am UTC](https://forum.mautic.org/t/json-str-error-when-reopen-the-closed-tab/4713/4 "2016-08-03T09:46:09Z")

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@escopecz  
In chrome, close the login page(/s/login) and reopen(ctrl+shift+t) the closed page, sometimes it will show the error string!

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### Author: ![escopecz](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/escopecz/32/370_2.png) [@escopecz](https://forum.mautic.org/u/escopecz)
#### Post date: [August 3, 2016, 11:36am UTC](https://forum.mautic.org/t/json-str-error-when-reopen-the-closed-tab/4713/5 "2016-08-03T11:36:17Z")

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Thanks for the explanation! I tried several times, but cannot replicate. Is there anything specific I have to do? Or OS/Chrome version?

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### Author: ![youyang](https://avatars.discourse-cdn.com/v4/letter/y/4491bb/32.png) [@youyang](https://forum.mautic.org/u/youyang)
#### Post date: [August 4, 2016, 12:02am UTC](https://forum.mautic.org/t/json-str-error-when-reopen-the-closed-tab/4713/6 "2016-08-04T00:02:22Z")

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@escopecz My OS is win10 pro, and Chrome version is 51.0.2704.106 m!  
The error keyword is mautic.user.auth.expired.header