phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'b8d8071b2996ffaf3dca100e766fa706' 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 ('b8d8071b2996ffaf3dca100e766fa706', -1, 1769998736, 1769998736, 'd849d817', -4, 0, 0)

Line : 187
File : sessions.php