phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '99a9e1bc42f00b373b0593dea90f47a9' 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 ('99a9e1bc42f00b373b0593dea90f47a9', -1, 1769875917, 1769875917, 'd849d851', -4, 0, 0)

Line : 187
File : sessions.php