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 ('e0031213f5df7f8d2ad50e4abbb9509a', -1, 1519481547, 1519481547, '36a099e9', -9, 0, 0)

Line : 187
File : sessions.php