phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '2b5a1c59ad3642f881354bd1bc2d28c2' 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 ('2b5a1c59ad3642f881354bd1bc2d28c2', -1, 1769511211, 1769511211, 'd849d814', -4, 0, 0)

Line : 187
File : sessions.php