phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'cc31b117236cc53c6a3bf970c03e0352' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('cc31b117236cc53c6a3bf970c03e0352', -1, 1769372703, 1769372703, 'd849d814', -4, 0, 0)

Line : 187
File : sessions.php