phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4e9f3c48e00b681aee6ec757cb563cb7' 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 ('4e9f3c48e00b681aee6ec757cb563cb7', -1, 1766856252, 1766856252, 'd849d819', -9, 0, 0)

Line : 187
File : sessions.php