phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8781b2d3c3c392385625a8f9843c5b25' 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 ('8781b2d3c3c392385625a8f9843c5b25', -1, 1758324965, 1758324965, 'd849d815', -4, 0, 0)

Line : 187
File : sessions.php