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 ('69695336b02e0f4c6cf99f08d06d19a6', -1, 1529322714, 1529322714, '369e0f61', 18, 0, 0)

Line : 187
File : sessions.php