phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a54390746d294218652afaece1f3f1fa' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('a54390746d294218652afaece1f3f1fa', -1, 1547819935, 1547819935, '36acdd07', 2, 0, 0)

Line : 198
File : sessions.php