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 ('99a2106d32e7a03e9ff803b7d9ab0f6a', -1, 1519537347, 1519537347, '36dd8343', -11, 0, 0)

Line : 187
File : sessions.php