phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'fafcccae15a0250cd8d3df3d54ea8d81' 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 ('fafcccae15a0250cd8d3df3d54ea8d81', -1, 1767060841, 1767060841, 'd849d819', 7, 0, 0)

Line : 187
File : sessions.php