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 ('520a19eab7b2eec3ae143f2ddf9c3a1c', -1, 1519474160, 1519474160, '36e31165', -2, 0, 0)

Line : 187
File : sessions.php