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 ('3d5e6c7d36f49387bb75325c2ac2d90f', -1, 1524269318, 1524269318, '365174bb', 4, 0, 0)

Line : 187
File : sessions.php