php error happened

Technical information
Error type256
Error descriptionTable 'SingleCell.Single_cell_samples' doesn't exist
URLsingle-cell.clst.riken.jp/non_riken_data/DAVID_Functional_Annotations_list.php?
Error file/var/www/html/non_riken_data/connections/MySQLiConnection.php
Error line125
SQL querySELECT `Accession_number`, `Annotation_chart`, `Annotation_report`, `Dataset_title`,(SELECT count(*) FROM (SELECT accession_number FROM `Single_cell_samples` ) `subQuery_cnt` WHERE `subQuery_cnt`.`accession_number`=`DAVID_Functional_Annotations`.`Accession_number`) as `Single_cell_samples_cnt` FROM `DAVID_Functional_Annotations` ORDER BY 1 ASC

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