phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a5bdbd4a59f2ec5656f941cc86950a31' 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 ('a5bdbd4a59f2ec5656f941cc86950a31', -1, 1765628524, 1765628524, 'd849d834', -4, 0, 0)

Line : 187
File : sessions.php