"Too many ( 's" error while running a cshell script

Question

I am running a cshell script for image processing using ISIS from USGS. The code I am using can be found here: https://github.com/Anirbanm0101/marci_isis/blob/main/marci_all.csh. I am getting the error while running the cam2map function as I can see that up to the explode function, the functions were able to execute their jobs perfectly (screenshot attached for reference). The error line and the contents of the files are shown for reference