Erro no banco de dados do WordPress: [Unknown column 'tstart' in 'where clause']
SELECT * FROM `wp21_mec_dates` WHERE ((`tstart`>='1590624000' AND `tend`<='1906502399') OR (`tstart`<='1906502399' AND `tend`>='1906502399') OR (`tstart`<='1590624000' AND `tend`>='1590624000')) 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` >= 1590629839 GROUP BY `post_id` ORDER BY `tstart`