phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'dcc416e88a90335b0058d9b4365dea51' 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 ('dcc416e88a90335b0058d9b4365dea51', -1, 1770080953, 1770080953, 'd849d805', -9, 0, 0)

Line : 187
File : sessions.php