phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '1bc0a7dd595bfb0c9efc3877c09179e5' 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 ('1bc0a7dd595bfb0c9efc3877c09179e5', -1, 1771045589, 1771045589, 'd849d88a', -4, 0, 0)

Line : 187
File : sessions.php