phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4267a6963cc444dc6fff1fc7daf316e3' 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 ('4267a6963cc444dc6fff1fc7daf316e3', -1, 1767989182, 1767989182, 'd849d887', 7, 0, 0)

Line : 187
File : sessions.php