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 ('9eeea5ddd608956f1a7ebdf233b2dd0f', -1, 1548078253, 1548078253, '6b151046', 7, 0, 0)

Line : 186
File : sessions.php