phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4dcf8fbdd1b517f8250ebcf80896f110' 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 ('4dcf8fbdd1b517f8250ebcf80896f110', -1, 1752589063, 1752589063, 'd849d8c3', 5, 0, 0)

Line : 187
File : sessions.php