phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ef94da5c361484b46b9632c96f7145a0' 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 ('ef94da5c361484b46b9632c96f7145a0', -1, 1765951798, 1765951798, 'd849d8d8', 26, 0, 0)

Line : 187
File : sessions.php