All of a sudden, the main page of my blog is showing a 404 error along with the message:
"Error: 0 max(): Argument ($value) must contain at least one element."
Even the editor panel for the category post layout is showing a 404 error.
However, the content is still present in the MySQL database, visible via phpMyAdmin under the Gridbox apps section.
I have attached a screenshot below. Appreciate your kind help.
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