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 ('1d727024c0ca6d8c5c08ad9c759ea84d', -1, 1539794225, 1539794225, '36c6d41e', -7, 0, 0)

Line : 187
File : sessions.php