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 ('3a74b69e9903c44649b66f706b8402b8', -1, 1529322678, 1529322678, '369e0f61', 15, 0, 0)

Line : 187
File : sessions.php