I am having the same issue. Can't find it in the project and the unicode character is not included in the codepoints file.
I managed to find the code for this icon here: #813 (comment)
category e574
The character is still missing from the ttf font file though.
For anyone else looking to use this icon, I was able to get an updated font file from a comment in issue #786 which contained the category glyph.
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I managed to find the code for this icon here: #813 (comment)
category e574
The character is still missing from the ttf font file though.