PHP Warning: Undefined array key “terms” in classic-metabox.php

Whenever we edit a topic this gets thrown in our server log:

[Thu Apr 27 11:32:57.060468 2023] [lsapi:warn] [pid 1739582:tid 140331420714752] [remote 77.174.247.228:51177] [host www.example.com] Backend log: PHP Warning: Undefined array key "terms" in /home/account/domains/example.com/public_html/wp-content/plugins/post-expirator/src/Views/classic-metabox.php on line 143\n, referer: https://www.example.com/wp-admin/post.php?post=3415&action=edit&classic-editor

No idea what this means or how bad it is, but I thought I’d mention it. Version 2.9.2 on WP 6.1.1, Enfold theme, PHP 8.1

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