phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '6d6d277c5ecfd6a6fdb1d6a15bd4d042' 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 ('6d6d277c5ecfd6a6fdb1d6a15bd4d042', -1, 1777918582, 1777918582, 'd849d8fe', 32, 0, 0)

Line : 187
File : sessions.php