phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8b39396cc2f0f57497c4644d2e961ba3' 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 ('8b39396cc2f0f57497c4644d2e961ba3', -1, 1762385195, 1762385195, 'd849d8a1', 4, 0, 0)

Line : 187
File : sessions.php