Error in executing sql.<br>SQL:Select CND_DT, CND_CLOSE, CND_OPEN_INT, CND_COI FROM ( SELECT CND_DT, CND_CLOSE, CND_OPEN_INT, CND_COI FROM eq_contract_details where CND_EXPIRY_DT = '2021-05-27' AND CND_SYMBOL = 'NIFTY' AND CND_INSTRUMENT IN ('FUTSTK', 'FUTIDX') AND CND_DT <= '2021-05-10' ORDER BY CND_DT DESC LIMIT 63 ) SUB ORDER BY CND_DT ASC<br>Error:Lost connection to MySQL server during query<br>Error in executing sql.<br>SQL:SELECT CAL_CURR_DT FROM calendar<br>Error:MySQL server has gone away<br>Error in executing sql.<br>SQL:Select 	RES_TO_DT FROM 	result_events WHERE RES_TO_DT > '2021-05-10' order by RES_TO_DT asc limit 5<br>Error:MySQL server has gone away<br>