Weird message log on Material Editor?

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I get what seems to be a warning saying Substrate is not enabled where my material editor log should be.

No clue what this could cause as problems or how to fix it.

@5Daydreams Thank you for your report! We would like to look into this further, would you be able to submit a bug report using the form available here? Fortnite Creative
For more information, such as how to get the reference ID, please check out the article here: https://create.fortnite.com/news/using-the-creative-and-uefn-bug-reporting-form