Warning: file(./book/index.txt): failed to open stream: No such file or directory in C:\OpenServer\domains\home\nfilatova.ru\docs\tems\index.php on line 143

Warning: join(): Invalid arguments passed in C:\OpenServer\domains\home\nfilatova.ru\docs\tems\index.php on line 143

Warning: fopen(./book/index.txt): failed to open stream: No such file or directory in C:\OpenServer\domains\home\nfilatova.ru\docs\tems\index.php on line 144
Ошибка