ID:22497 VHDL error at <location>: character '<character>' in file '<string>' is not in the element return type '<string>' of this 'readline()' call

CAUSE: Intel Quartus Prime Synthesis generated the specified error message for the specified location in a Design File.

ACTION: Fix the problem identified by the message text. A future version of the Intel Quartus Prime software will provide more extensive Help for this error message.