phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ee91d59a8aa996b7a10b3c9f0ed177e8' 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 ('ee91d59a8aa996b7a10b3c9f0ed177e8', -1, 1766071516, 1766071516, 'd849d8d7', -4, 0, 0)

Line : 187
File : sessions.php