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 ('1cb1c23c0dc81bb696542bb1a1dd5c56', -1, 1516743484, 1516743484, '36e3069c', -8, 0, 0)

Line : 187
File : sessions.php