Mautic Community Forums

Unsubscribe page throws error 500

Your software
My Mautic version is: 2.16.2
My PHP version is: PHP Version 7.2.30

Your problem
My problem is: Unsubscribe page gives error 500

These errors are showing in the log:

[2020-05-18 09:52:03] mautic.CRITICAL: Uncaught PHP Exception Twig_Error_Loader: “Unable to find template “:blank_left:base.html.twig” (looked into: /home/mymautic/public_html/mautic.mymautic.com/vendor/knplabs/knp-menu/src/Knp/Menu/Resources/views, /home/mymautic/public_html/mautic.mymautic.com/vendor/symfony/twig-bridge/Resources/views/Form).” at /home/mymautic/public_html/mautic.mymautic.com/themes/blank_left/html/message.html.twig line 1 {“exception”:"[object] (Twig_Error_Loader(code: 0): Unable to find template “:blank_left:base.html.twig” (looked into: /home/mymautic/public_html/mautic.mymautic.com/vendor/knplabs/knp-menu/src/Knp/Menu/Resources/views, /home/mymautic/public_html/mautic.mymautic.com/vendor/symfony/twig-bridge/Resources/views/Form). at /home/mymautic/public_html/mautic.mymautic.com/themes/blank_left/html/message.html.twig:1)"}
[2020-05-18 09:57:26] mautic.CRITICAL: Uncaught PHP Exception InvalidArgumentException: “The string b:8:{f:9:“fbhedf”;b:5:{v:3;f:47:“dbzcbvta.fifag”;v:4;v:713;}f:8:“fzbvy”;v:482;f:7:“fgbg”;f:55:“8fd58ca9568b1626458417”;f:7:“yfbe”;v:446780;f:0:“dubaafy”;b:4:{f:8:“fzbvy”;v:482;}} is not a serialized array” at /home/mymautic/public_html/mautic.mymautic.com/app/bundles/CoreBundle/Helper/ClickthroughHelper.php line 46 {“exception”:"[object] (InvalidArgumentException(code: 0): The string b:8:{f:9:“fbhedf”;b:5:{v:3;f:47:“dbzcbvta.fifag”;v:4;v:713;}f:8:“fzbvy”;v:482;f:7:“fgbg”;f:55:“8fd58ca9568b1626458417”;f:7:“yfbe”;v:446780;f:0:“dubaafy”;b:4:{f:8:“fzbvy”;v:482;}} is not a serialized array at /home/mymautic/public_html/mautic.mymautic.com/app/bundles/CoreBundle/Helper/ClickthroughHelper.php:46)"}
[2020-05-18 09:57:33] mautic.CRITICAL: Uncaught PHP Exception InvalidArgumentException: “The string b:8:{f:9:“fbhedf”;b:5:{v:3;f:47:“dbzcbvta.fifag”;v:4;v:713;}f:8:“fzbvy”;v:482;f:7:“fgbg”;f:55:“8fd58caf12b80479303543”;f:7:“yfbe”;v:446776;f:0:“dubaafy”;b:4:{f:8:“fzbvy”;v:482;}} is not a serialized array” at /home/mymautic/public_html/mautic.mymautic.com/app/bundles/CoreBundle/Helper/ClickthroughHelper.php line 46 {“exception”:"[object] (InvalidArgumentException(code: 0): The string b:8:{f:9:“fbhedf”;b:5:{v:3;f:47:“dbzcbvta.fifag”;v:4;v:713;}f:8:“fzbvy”;v:482;f:7:“fgbg”;f:55:“8fd58caf12b80479303543”;f:7:“yfbe”;v:446776;f:0:“dubaafy”;b:4:{f:8:“fzbvy”;v:482;}} is not a serialized array at /home/mymautic/public_html/mautic.mymautic.com/app/bundles/CoreBundle/Helper/ClickthroughHelper.php:46)"}
[2020-05-18 09:59:57] mautic.CRITICAL: Uncaught PHP Exception Twig_Error_Loader: “Unable to find template “:blank_left:base.html.twig” (looked into: /home/mymautic/public_html/mautic.mymautic.com/vendor/knplabs/knp-menu/src/Knp/Menu/Resources/views, /home/mymautic/public_html/mautic.mymautic.com/vendor/symfony/twig-bridge/Resources/views/Form).” at /home/mymautic/public_html/mautic.mymautic.com/themes/blank_left/html/message.html.twig line 1 {“exception”:"[object] (Twig_Error_Loader(code: 0): Unable to find template “:blank_left:base.html.twig” (looked into: /home/mymautic/public_html/mautic.mymautic.com/vendor/knplabs/knp-menu/src/Knp/Menu/Resources/views, /home/mymautic/public_html/mautic.mymautic.com/vendor/symfony/twig-bridge/Resources/views/Form). at /home/mymautic/public_html/mautic.mymautic.com/themes/blank_left/html/message.html.twig:1)"}
[2020-05-18 10:18:20] mautic.CRITICAL: Uncaught PHP Exception InvalidArgumentException: “The string b:8:{f:9:“fbhedf”;b:5:{v:3;f:47:“dbzcbvta.fifag”;v:4;v:713;}f:8:“fzbvy”;v:482;f:7:“fgbg”;f:55:“8fd593e201929524407016”;f:7:“yfbe”;v:447486;f:0:“dubaafy”;b:4:{f:8:“fzbvy”;v:482;}} is not a serialized array” at /home/mymautic/public_html/mautic.mymautic.com/app/bundles/CoreBundle/Helper/ClickthroughHelper.php line 46 {“exception”:"[object] (InvalidArgumentException(code: 0): The string b:8:{f:9:“fbhedf”;b:5:{v:3;f:47:“dbzcbvta.fifag”;v:4;v:713;}f:8:“fzbvy”;v:482;f:7:“fgbg”;f:55:“8fd593e201929524407016”;f:7:“yfbe”;v:447486;f:0:“dubaafy”;b:4:{f:8:“fzbvy”;v:482;}} is not a serialized array at /home/mymautic/public_html/mautic.mymautic.com/app/bundles/CoreBundle/Helper/ClickthroughHelper.php:46)"}
[2020-05-18 10:23:27] mautic.CRITICAL: Uncaught PHP Exception Twig_Error_Loader: “Unable to find template “:blank_left:base.html.twig” (looked into: /home/mymautic/public_html/mautic.mymautic.com/vendor/knplabs/knp-menu/src/Knp/Menu/Resources/views, /home/mymautic/public_html/mautic.mymautic.com/vendor/symfony/twig-bridge/Resources/views/Form).” at /home/mymautic/public_html/mautic.mymautic.com/themes/blank_left/html/message.html.twig line 1 {“exception”:"[object] (Twig_Error_Loader(code: 0): Unable to find template “:blank_left:base.html.twig” (looked into: /home/mymautic/public_html/mautic.mymautic.com/vendor/knplabs/knp-menu/src/Knp/Menu/Resources/views, /home/mymautic/public_html/mautic.mymautic.com/vendor/symfony/twig-bridge/Resources/views/Form). at /home/mymautic/public_html/mautic.mymautic.com/themes/blank_left/html/message.html.twig:1)"}
[2020-05-18 10:29:41] mautic.CRITICAL: Uncaught PHP Exception Twig_Error_Loader: “Unable to find template “:blank_left:base.html.twig” (looked into: /home/mymautic/public_html/mautic.mymautic.com/vendor/knplabs/knp-menu/src/Knp/Menu/Resources/views, /home/mymautic/public_html/mautic.mymautic.com/vendor/symfony/twig-bridge/Resources/views/Form).” at /home/mymautic/public_html/mautic.mymautic.com/themes/blank_left/html/message.html.twig line 1 {“exception”:"[object] (Twig_Error_Loader(code: 0): Unable to find template “:blank_left:base.html.twig” (looked into: /home/mymautic/public_html/mautic.mymautic.com/vendor/knplabs/knp-menu/src/Knp/Menu/Resources/views, /home/mymautic/public_html/mautic.mymautic.com/vendor/symfony/twig-bridge/Resources/views/Form). at /home/mymautic/public_html/mautic.mymautic.com/themes/blank_left/html/message.html.twig:1)"}

Steps I have tried to fix the problem:

I have a feeling it has something to do with the PHP Version I am using or one of the components installed with PHP. That a built in function for string contamination is missing (or something like this)

Hello,

Did you manage to know the cause of this error?

I have exactly the same issue