Please note this is an old forum thread. Information in this post may be out-to-date and/or erroneous.
Every phpdocx version includes new features and improvements. Previously unsupported features may have been added to newer releases, or past issues may have been corrected.
I changed to memory_limit to -1 and the error continues. The error occurs when I execute the sign () function. The same code is working in development, only in production does not work.