phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'caefb552fc0f5d707608a5b3efdcb611' 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 ('caefb552fc0f5d707608a5b3efdcb611', -1, 1770436982, 1770436982, 'd849d88f', -4, 0, 0)

Line : 187
File : sessions.php