phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c791b3b670d5bbb0e3165e469ed2a208' 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 ('c791b3b670d5bbb0e3165e469ed2a208', -1, 1752725800, 1752725800, 'd849d861', -9, 0, 0)

Line : 187
File : sessions.php