phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a960ae3d77d8b60b3e6ced09ad239836' 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 ('a960ae3d77d8b60b3e6ced09ad239836', -1, 1767873403, 1767873403, 'd849d868', -4, 0, 0)

Line : 187
File : sessions.php