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David Haworth
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September 10, 2017 at 6:11 pm
Hello,
I am receiving this intermittent error message when people are trying to book through event expresso.
Fatal error: Uncaught exception 'EventEspresso\core\exceptions\InvalidSessionDataException' with message 'The session data is missing, invalid, or corrupted.<br><pre></pre><br>' in /home/matrixat/public_html/wp_Matrix2016/wp-content/plugins/event-espresso-core-reg/core/EE_Session.core.php:607 Stack trace: #0 /home/matrixat/public_html/wp_Matrix2016/wp-content/plugins/event-espresso-core-reg/core/EE_Session.core.php(484): EE_Session->_retrieve_session_data() #1 /home/matrixat/public_html/wp_Matrix2016/wp-content/plugins/event-espresso-core-reg/core/EE_Session.core.php(214): EE_Session->_espresso_session() #2 [internal function]: EE_Session->open_session('') #3 /home/matrixat/public_html/wp_Matrix2016/wp-includes/class-wp-hook.php(298): call_user_func_array(Array, Array) #4 /home/matrixat/public_html/wp_Matrix2016/wp-includes/class-wp-hook.php(323): WP_Hook->apply_filters('', Array) #5 /home/matrixat/public_html/wp_Matrix2016/wp-includes/plugin.php(453): WP_Hook->do_action(Array) #6 /home/matrixat/public_html/w in /home/matrixat/public_html/wp_Matrix2016/wp-content/plugins/event-espresso-core-reg/core/EE_Session.core.php on line 607
Is anyone able to help me with what is happening and how I can fix it?
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This topic was modified 7 years, 4 months ago by
 Tony. Reason: Code formatting
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Tony
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September 11, 2017 at 3:33 am
Hi there,
The error message means there was a problem either extracting your session data, or if the session data is encrypted there was a problem decrypting the data.
Are those ‘new’ registrations or are user returning to pay for a registration created previously?
In the error logs where the above has this <br><pre></pre><br> do you see any with any additional information between those tags?
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David Haworth
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September 11, 2017 at 4:18 am
Unfortunately not. The HTML tags are coming through just as you see them.
My understanding is at it is new registrations who sometimes receive the error message then they click the register button.
Would the extraction or encryption of the session data be effected by a lack of memory on the site? I have increased the sites memory from 128mb to 368mb.
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Tony
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September 11, 2017 at 4:32 am
Unfortunately not. The HTML tags are coming through just as you see them.
Those are expected as I’m assuming you have WP_Debug enabled, but it means that the session is likely empty (which at that point would be strange).
Would the extraction or encryption of the session data be effected by a lack of memory on the site?
Possibly but then I’d expect to see a memory exhausted error in the logs.
I’ll check in with our developers and see what feedback they can provide (may take a little due to time differences).
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Tony
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September 11, 2017 at 9:58 am
Hi David,
Do you know the exact page/step that error is being thrown on?
Do you have any caching plugins active on the site? Or does your host run server side caching at all? If unsure I recommend checking with them as the EE pages will need to be excluded from any caching that’s enabled.
Also if you go to Event Espresso -> General Settings -> Admin Options
Is the option ‘Encode Session Data?’ set to Yes?
If not enable that and see if the error is still shown then.
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David Haworth
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September 11, 2017 at 5:13 pm
Unfortunately it is an intermittent error so it doesn’t always occur. But to date the error has always been on the https://www.matrix-inst.org.au/registration-checkout/ page after you click on the ‘Complete my registration’ button.
I have activated the ‘Encode session data’ as suggested. Since I increased the sites memory there has been no error. I think I’ll wait to see what happens and if it crops up once more I’ll let you know.
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