phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a823dcf0a68d06a848a4afe0b26a2941' 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 ('a823dcf0a68d06a848a4afe0b26a2941', -1, 1765965471, 1765965471, 'd849d816', -4, 0, 0)

Line : 187
File : sessions.php