phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '79b68f9d0e933149da0799ea3544ac5d' 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 ('79b68f9d0e933149da0799ea3544ac5d', -1, 1773204096, 1773204096, 'd849d894', 28, 0, 0)

Line : 187
File : sessions.php