phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '2acabffe4f1203eb0465e4ec493808c1' 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 ('2acabffe4f1203eb0465e4ec493808c1', -1, 1765628184, 1765628184, 'd849d836', -4, 0, 0)

Line : 187
File : sessions.php