Zettlr cannot update reference and recognize citation
Today my zettlr suddenly cannot recognize citations and update reference, I type @ and [@] but nothing happened. The old markdown files with citations cannot render. I re-install zettlr, re-export the json file and re-connect zettlr and the json file, but it still does not work. I have tried with the bibtex but nothing happened. My json file contains about 300 items. But when I export the markdown files to PDF, the reference is generated rightly.