Documents pour Auteur OU Nom cité : Mwange, Jean de Dieu

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Fatal error: Wrong SQL: SELECT num, date, amj, hms ,auteur, url, stit, titre, sstit, tres, page, cote, resume, journal, remarque, fn, cit, type, lang, comment, statut, fonds, frg, urlorg, url1, url2, trad, class, declass, fsize, datent, datcor, datwww, orig, extract, pdfpages, abstract, tabs, tz, commeng, neg, trait, mcl, auteurs, nomcit, lieucit FROM doc WHERE auteur = 'Mwange, Jean de Dieu' OR JSON_SEARCH(auteurs, 'ONE', 'Mwange, Jean de Dieu') IS NOT NULL OR JSON_SEARCH(nomcit, 'ONE', 'Mwange, Jean de Dieu') IS NOT NULL ORDER BY amj; Error: Invalid JSON text in argument 1 to function json_search: "The document is empty." at position 0. in /home/francegezv/www/fgtshowresult.php on line 23