phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '231286fa65885e28e9882ea8d3c21b82' 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 ('231286fa65885e28e9882ea8d3c21b82', -1, 1771956044, 1771956044, 'd849d882', -4, 0, 0)

Line : 187
File : sessions.php