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 ('188da161bc60b14cdecb0837824bad25', -1, 1527265634, 1527265634, '36a2a3b5', 0, 0, 0)

Line : 187
File : sessions.php