phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '79f770494c74f78f6b39f41565a909d0' 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 ('79f770494c74f78f6b39f41565a909d0', -1, 1778915132, 1778915132, 'd849d953', -4, 0, 0)

Line : 187
File : sessions.php