phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '98bf474956a602f14ddcee96ad510cf1' 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 ('98bf474956a602f14ddcee96ad510cf1', -1, 1770468644, 1770468644, 'd849d89c', 11, 0, 0)

Line : 187
File : sessions.php