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 ('65f1309b86c5545a8cf1f413be110f35', -1, 1527183747, 1527183747, '36a6f50a', 12, 0, 0)

Line : 187
File : sessions.php