[support] Form validation Session error

[Abdu Rahiman]

Hi,
I am facing two problems
1.Validation error, please try again. If this error persists, please contact the site administrator.

While submitting postcard form I am getting the above error sometimes, i have searched drupal site but I couldn't get a solution

2.TCPDF error: Font file not found
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While viewing the pdf for a node I am getting the above error in Linux, Ihave changed the path accordingly in tcpdf_config.php and also given the full permission for the fonts directory, It's working fine in Windows.

Thanks in advance

Abdu Rahiman
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