Erro no banco de dados do WordPress: [Unknown column 'tstart' in 'where clause']
SELECT * FROM `wp21_mec_dates` WHERE ((`tstart`>='1596758400' AND `tend`<='1914451199') OR (`tstart`<='1914451199' AND `tend`>='1914451199') OR (`tstart`<='1596758400' AND `tend`>='1596758400')) AND (1) ORDER BY `tstart` ASC

Erro no banco de dados do WordPress: [Unknown column 'tstart' in 'field list']
SELECT `post_id`, `tstart` FROM `wp21_mec_dates` WHERE `tstart` >= 1596834435 GROUP BY `post_id` ORDER BY `tstart` ASC