How to fix Call to a member function getImage() on a non-object in error?

Question

opencart

Fatal error: Call to a member function getImage() on a non-object in /site.ru/system/library/image.php on line 145
Please tell me how to fix this error on OpenCart 2?

Answer 1

stupidity, commented out these last 2 lines and everything worked fine

Answer 2

where the Image::watermark
method is called with incorrect parameters. Judging by the code, it expects an instance of the same Image class as the first argument $watermark, and something else is passed there.
apparently you have version 2.1.0+
and in version 2.0 this method took the path to the file, apparently. This is probably what caused the problem.