phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '890f192fd40ce41e57d7a0306cc9f8e9' 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 ('890f192fd40ce41e57d7a0306cc9f8e9', -1, 1771006829, 1771006829, 'd849d897', 14, 0, 0)

Line : 187
File : sessions.php