phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '97cf557ddc0b3075189d2600af687e0d' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('97cf557ddc0b3075189d2600af687e0d', -1, 1768187426, 1768187426, 'd849d83d', -9, 0, 0)

Line : 187
File : sessions.php