Custom study gives "no cards matched" error

AnkiMobile (iPhone/iPad) Help
1

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Can’t use any function in custom study

2

This error only appeared after the lasted update

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Open the deck in the browser and search for prop:due<=1 "deck:DECK NAME HERE". Are there any cards that show up?

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em..it didn’t worked no cards inside

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You didn’t type the deck name; “DECK NAME HERE” was a placeholder for you to fill.