Software error:

Unknown column '20190412Lo' in 'where clause' on 
    SELECT COUNT(*) FROM DOCS, LINKS, DATE_SPETTACOLI WHERE DOCS.ID = LINKS.DOC_ID AND DATE_SPETTACOLI.DOC_ID = DOCS.ID AND TO_DAYS(20190412Lo) = TO_DAYS(DATE_SPETTACOLI.DATA)  AND LINKS.FOLDER_ID IN(155,71,70,91,143,99,46,144,157,110,159,147,149,161,156,160,47,109,92,98,148) AND LINKS.MAIN_FOLDER = 'Y' AND DOCS.STATO = 'V'
   at /var/www/teatrodiroma.net/Adon2015/Kernel/Adon/Plugins/Calendar.pm line 344.

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