phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '506cc5c432189181328656beaf23f244' 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 ('506cc5c432189181328656beaf23f244', -1, 1788851524, 1788851524, 'd849d94f', -4, 0, 0)

Line : 187
File : sessions.php