phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'd7b0894e79b68bcb516ac4ac8c4e25f1' 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 ('d7b0894e79b68bcb516ac4ac8c4e25f1', -1, 1770885857, 1770885857, 'd849d88f', -4, 0, 0)

Line : 187
File : sessions.php