phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'f2d3b1f93a8dae5995f2c6e6463889db' 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 ('f2d3b1f93a8dae5995f2c6e6463889db', -1, 1769411353, 1769411353, 'd849d814', -4, 0, 0)

Line : 187
File : sessions.php