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 ('db1cb8244111b49a19253b15e20a8175', -1, 1502890149, 1502890149, '3691442d', 4, 0, 0)

Line : 187
File : sessions.php