phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a4362dcee9bb889b3c4865c4b4f81e99' 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 ('a4362dcee9bb889b3c4865c4b4f81e99', -1, 1770699683, 1770699683, 'd849d88f', -4, 0, 0)

Line : 187
File : sessions.php