phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '2561640529f264b76d85114f3ff5b76e' 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 ('2561640529f264b76d85114f3ff5b76e', -1, 1770786738, 1770786738, 'd849d821', -9, 0, 0)

Line : 187
File : sessions.php