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 ('cf2316aa212c8a5c61e68d030c6ccd59', -1, 1550397916, 1550397916, '36e217a0', 7, 0, 0)

Line : 186
File : sessions.php