phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '2bcaf904ad5c47e0f7623eaaff68c7a9' 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 ('2bcaf904ad5c47e0f7623eaaff68c7a9', -1, 1770909343, 1770909343, 'd849d88f', -4, 0, 0)

Line : 187
File : sessions.php