phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a15cc263104b03c9878d1047b3b4df3a' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('a15cc263104b03c9878d1047b3b4df3a', -1, 1715140200, 1715140200, 'c0a80201', 0, 0, 0)

Line : 187
File : sessions.php