phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '28b7ce6a2d0c305b82fbf22254bcd94b' 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 ('28b7ce6a2d0c305b82fbf22254bcd94b', -1, 1767083513, 1767083513, 'd849d83c', 6, 0, 0)

Line : 187
File : sessions.php