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 ('9dd59217d696671c1f3dc7c31cab613b', -1, 1519466929, 1519466929, '36c49118', -2, 0, 0)

Line : 187
File : sessions.php