phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8a398d4865a7cf4e03d060d46313e34a' 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 ('8a398d4865a7cf4e03d060d46313e34a', -1, 1759815497, 1759815497, 'd849d82b', -4, 0, 0)

Line : 187
File : sessions.php