phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'e4e155c51dadbe9aa04783408800cee9' 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 ('e4e155c51dadbe9aa04783408800cee9', -1, 1771578475, 1771578475, 'd849d876', -9, 0, 0)

Line : 187
File : sessions.php