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 ('bc687b0ff26473d5d034f2a6986c8c5f', -1, 1516565590, 1516565590, '36e2295b', -1, 0, 0)

Line : 187
File : sessions.php