# Entering a landing page
**URL:** https://forum.mautic.org/t/entering-a-landing-page/6058
**Category:** Product Support
**Created:** [January 15, 2016, 12:35pm UTC](https://forum.mautic.org/t/entering-a-landing-page/6058 "2016-01-15T12:35:13Z")
**Posts on this page:** 16
**Page:** 1
### Author:  [@jcolome](https://forum.mautic.org/u/jcolome)
#### Post date: [January 15, 2016, 12:35pm UTC](https://forum.mautic.org/t/entering-a-landing-page/6058/1 "2016-01-15T12:35:13Z")
When creating a landing page all goes well until i try to save & close or apply.
I’m presented with what appears to be a saved form but cannot click anywhere else. exiting that form does not save it.
Anyone else having this happen ? it only occurs when using self-hosted.
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### Author:  [@jcolome](https://forum.mautic.org/u/jcolome)
#### Post date: [January 15, 2016, 2:41pm UTC](https://forum.mautic.org/t/entering-a-landing-page/6058/2 "2016-01-15T14:41:29Z")
No themes being used
error log from the mautic directory below
[14-Jan-2016 00:47:00 UTC] PHP Fatal error: Call to undefined function MauticConfigBundleModelmb\_strlen() in /home/ptkkbpjo/public\_html/mautic/app/bundles/ConfigBundle/Model/SysinfoModel.php on line 138
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### Author:  [@escopecz](https://forum.mautic.org/u/escopecz)
#### Post date: [January 15, 2016, 2:43pm UTC](https://forum.mautic.org/t/entering-a-landing-page/6058/3 "2016-01-15T14:43:59Z")
Install Multi Byte PHP extension: [http://php.net/manual/en/mbstring.installation.php](http://php.net/manual/en/mbstring.installation.php)
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### Author:  [@jcolome](https://forum.mautic.org/u/jcolome)
#### Post date: [January 15, 2016, 3:56pm UTC](https://forum.mautic.org/t/entering-a-landing-page/6058/4 "2016-01-15T15:56:11Z")
That didn’t help but thanks - landing form stays the same without saving.
can i provide you with credentials to see this ?
Hello,
We have enabled the PHP module “mbstring” for you.
You can see a list of available modules you can enable yourself in cPanel in the PHP Selector:
[https://my.hostmantis.com/knowledgebase.php?action=displayarticle&catid=42&id=156](https://my.hostmantis.com/knowledgebase.php?action=displayarticle&catid=42&id=156)
Be careful enabling/disabling modules as it can break scripts that do not require those modules.
Thank you,
HostMantis Support
[support@hostmantis.com](mailto:support@hostmantis.com)
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### Author:  [@escopecz](https://forum.mautic.org/u/escopecz)
#### Post date: [January 15, 2016, 3:58pm UTC](https://forum.mautic.org/t/entering-a-landing-page/6058/5 "2016-01-15T15:58:37Z")
Does the same error message still appears in the logs?
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### Author:  [@jcolome](https://forum.mautic.org/u/jcolome)
#### Post date: [January 15, 2016, 4:02pm UTC](https://forum.mautic.org/t/entering-a-landing-page/6058/6 "2016-01-15T16:02:27Z")
same error but this is old date - yeterday
[14-Jan-2016 00:47:00 UTC] PHP Fatal error: Call to undefined function MauticConfigBundleModelmb\_strlen() in /home/ptkkbpjo/public\_html/mautic/app/bundles/ConfigBundle/Model/SysinfoModel.php on line 138
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### Author:  [@escopecz](https://forum.mautic.org/u/escopecz)
#### Post date: [January 15, 2016, 4:06pm UTC](https://forum.mautic.org/t/entering-a-landing-page/6058/7 "2016-01-15T16:06:53Z")
I overlooked the path. It was fired in the System Info page. It’s not related to the Landing Pages. No JS error? Otherwise I’m getting out of ideas about what could cause it.
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### Author:  [@jcolome](https://forum.mautic.org/u/jcolome)
#### Post date: [January 17, 2016, 2:57am UTC](https://forum.mautic.org/t/entering-a-landing-page/6058/8 "2016-01-17T02:57:53Z")
great - moving to plan B
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### Author:  [@jcolome](https://forum.mautic.org/u/jcolome)
#### Post date: [January 18, 2016, 1:08pm UTC](https://forum.mautic.org/t/entering-a-landing-page/6058/9 "2016-01-18T13:08:17Z")
I guess plan B was no good. Have been trying to figure out why my landing page settings won’t save. Can anyone chime in on this ?
At first tried changing some php settings from my host acct. but that did not go too well. Here’s a link to a video describing the issue: [http://www.screencast.com/t/szgHOP7Wn](http://www.screencast.com/t/szgHOP7Wn)
Thanks in advance
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### Author:  [@escopecz](https://forum.mautic.org/u/escopecz)
#### Post date: [January 20, 2016, 9:30am UTC](https://forum.mautic.org/t/entering-a-landing-page/6058/10 "2016-01-20T09:30:29Z")
I’d really like to help you, but without an error message from the logs I have no idea what could cause it.
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### Author:  [@jcolome](https://forum.mautic.org/u/jcolome)
#### Post date: [January 20, 2016, 1:03pm UTC](https://forum.mautic.org/t/entering-a-landing-page/6058/11 "2016-01-20T13:03:04Z")
I know. I will find a solution.
Thanks -
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### Author:  [@jcolome](https://forum.mautic.org/u/jcolome)
#### Post date: [January 21, 2016, 8:35pm UTC](https://forum.mautic.org/t/entering-a-landing-page/6058/12 "2016-01-21T20:35:18Z")
Where are all the places I should look for error logs ?
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### Author:  [@escopecz](https://forum.mautic.org/u/escopecz)
#### Post date: [January 22, 2016, 8:15am UTC](https://forum.mautic.org/t/entering-a-landing-page/6058/13 "2016-01-22T08:15:13Z")
Every server can have the error logs elsewhere, but in my Ubuntu, the default location is `/var/log/apache2/error.log
`. Mautic stores logs to app/logs folder by default.
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### Author:  [@jcolome](https://forum.mautic.org/u/jcolome)
#### Post date: [January 22, 2016, 5:10pm UTC](https://forum.mautic.org/t/entering-a-landing-page/6058/14 "2016-01-22T17:10:45Z")
Found the issue -
Taking a look at server level logs, we see some 403 errors due to ModSecurity rule violations on your account from your IP address, which is most likely the issue which you are experiencing.
We have whitelisted your account for the rule and you should no longer have an issue with it.
Thank you,
HostMantis Support
[support@hostmantis.com](mailto:support@hostmantis.com)
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### Author:  [@escopecz](https://forum.mautic.org/u/escopecz)
#### Post date: [January 15, 2016, 1:00pm UTC](https://forum.mautic.org/t/entering-a-landing-page/6058/15 "2016-01-15T13:00:08Z")
Do you by chance use a custom (3rd party) theme?
Is there some error message in the server or Mautic logs (app/logs folder)?
If you press F12 and go to the Console tab, is there some error message?
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### Author:  [@jcolome](https://forum.mautic.org/u/jcolome)
#### Post date: [January 15, 2016, 12:35pm UTC](https://forum.mautic.org/t/entering-a-landing-page/6058/16 "2016-01-15T12:35:13Z")
When creating a landing page all goes well until i try to save & close or apply.
I’m presented with what appears to be a saved form but cannot click anywhere else. exiting that form does not save it.
Anyone else having this happen ? it only occurs when using self-hosted.