So, as a way to give back although I’m sure you all already know, from ghost log:
NAME: BadRequestError
MESSAGE: Error parsing filter
level: normal
Error: Query Error: unexpected character in filter at char 7
at Child.applyDefaultAndCustomFilters (/var/www/ghost/versions/6.26.0/node_modules/@tryghost/bookshelf-filter/lib/bookshelf-filter.js:68:23)
slug:[mpaq news]