phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'fdcff7ca7df4e3fd1f34152cbdfe49b0' 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 ('fdcff7ca7df4e3fd1f34152cbdfe49b0', -1, 1758045297, 1758045297, 'd849d863', -9, 0, 0)

Line : 187
File : sessions.php