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 ('b079b96a99585d3b00b57ec93a1262ba', -1, 1553516898, 1553516898, '22cc3404', -4, 0, 0)

Line : 187
File : sessions.php