I think you need to check to see if the page_type_op variable isset before using it to create class names. On non-node pages the preceding logic skips setting this variable.

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#1 page_type_op_und.patch792 bytesdpolant

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dpolant’s picture

dpolant commented
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new page_type_op_und.patch792 bytes

btw here is a patch that seems to fix the error while maintaining desired functionality

danielhonrade’s picture

danielhonrade commented
Status: Active » Fixed

committed, thanks

Status: Fixed » Closed (fixed)

Automatically closed -- issue fixed for 2 weeks with no activity.