Check whether the page or namespace uses the following special characters. If used, delete.
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The CKG editor adds color through a cascading style sheet (CSS) that inherits the color displayed in the editor's color selection box. So need to turn off the color change plugin (e.g. Dark Reader(1).) on browser when adding color to fonts.
Solution: https://forum.dokuwiki.org/d/21208-updating-struct-and-sqlite-broke-my-wiki-again
opts
. You may not have a table named like that!