Fatal error on product edit page

Hi.
Could you please help me with my product edit page issue. When I try to edit product a fatal error shows up:

Fatal error: Uncaught Twig_Error_Syntax: Unexpected token "end of print statement" of value "" in "catalog/product_form.twig" at line 159. in /home/linia/domains/liniadzwieku.pl/public_html/system/library/template/Twig/ExpressionParser.php:190 Stack trace: #0 /home/linia/domains/liniadzwieku.pl/public_html/system/library/template/Twig/ExpressionParser.php(84): Twig_ExpressionParser->parsePrimaryExpression() #1 /home/linia/domains/liniadzwieku.pl/public_html/system/library/template/Twig/ExpressionParser.php(41): Twig_ExpressionParser->getPrimary() #2 /home/linia/domains/liniadzwieku.pl/public_html/system/library/template/Twig/ExpressionParser.php(50): Twig_ExpressionParser->parseExpression(61) #3 /home/linia/domains/liniadzwieku.pl/public_html/system/library/template/Twig/Parser.php(144): Twig_ExpressionParser->parseExpression() #4 /home/linia/domains/liniadzwieku.pl/public_html/system/library/template/Twig/Parser.php(100): Twig_Parser->subparse(NULL, false) #5 /home/linia/domains/liniadzwieku.pl/public_html/system/library in /home/linia/domains/liniadzwieku.pl/public_html/system/library/template/Twig/ExpressionParser.php on line 190

I din't install new extension I think and don't remember to change anything.
Many thanks
Rox

I din't install new extension I think and don't remember to change anything.

Neither can this issue be reproduced from the core. However, more information is needed. Forum rules.