phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a5a96f55778a3b3e5c8938caee6bf41e' 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 ('a5a96f55778a3b3e5c8938caee6bf41e', -1, 1759503612, 1759503612, 'd849d851', -4, 0, 0)

Line : 187
File : sessions.php