phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c4cbac1d1cb3afd841d3a0533b0973a4' 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 ('c4cbac1d1cb3afd841d3a0533b0973a4', -1, 1766255895, 1766255895, 'd849d8a2', 2, 0, 0)

Line : 187
File : sessions.php