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Home/ Questions/Q 8249055
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Editorial Team
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Editorial Team
Asked: June 7, 20262026-06-07T23:24:22+00:00 2026-06-07T23:24:22+00:00

When I call the function file_is_displayable_image() from my template file, I get the following

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When I call the function file_is_displayable_image() from my template file, I get the following error:

Fatal error: Call to undefined function file_is_displayable_image()

The function works fine when I call using a hook, but I’m not sure why…

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  1. Editorial Team
    Editorial Team
    2026-06-07T23:24:24+00:00Added an answer on June 7, 2026 at 11:24 pm

    Never do anything in a theme before the hook after_setup_theme. Wait until all needed functions are available.

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