phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8b70918805c7300a4785acbc2d3dac69' 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 ('8b70918805c7300a4785acbc2d3dac69', -1, 1545129224, 1545129224, '12cd13cb', 9, 0, 0)

Line : 198
File : sessions.php