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 ('869b6e78847f7d5a57868cb07d3a2b86', -1, 1529850574, 1529850574, '36e11fbc', -9, 0, 0)

Line : 187
File : sessions.php