phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '86e64ab8d149dc556c64b8a2d9e5c39a' 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 ('86e64ab8d149dc556c64b8a2d9e5c39a', -1, 1755691636, 1755691636, 'd849d891', 0, 0, 0)

Line : 187
File : sessions.php