phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('82cb0dc7bf384f79aa6fdf0488435e21', -1, 1542347593, 1542347593, '36524915', -1, 0, 0)

Line : 186
File : sessions.php