phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'f2266048c3d7246b3bd849235e9d7d77' 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 ('f2266048c3d7246b3bd849235e9d7d77', -1, 1770203648, 1770203648, 'd849d821', -9, 0, 0)

Line : 187
File : sessions.php