phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'bb1a5da9e9064310a099cc05b5f81374' 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 ('bb1a5da9e9064310a099cc05b5f81374', -1, 1777377338, 1777377338, 'd849d8dc', 28, 0, 0)

Line : 187
File : sessions.php