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 ('1d7477f3c55ba31301e8c01864c8cc90', -1, 1540346461, 1540346461, '36a14d1e', -4, 0, 0)

Line : 189
File : sessions.php