Error encountered resolving symbol values statically. Function calls are not supported. Consider replacing the function or lambda with a reference to an exported function

I have created 2 projects Project A has Firbase Login and Project is just like simple blank ionic app. but using List in Project A I am calling Project using relative path. While creating production app it is showing the error:

typescript error
Error encountered resolving symbol values statically. Function calls are not supported. Consider replacing
the function or lambda with a reference to an exported function (position 756:18 in the original .ts file)