It would have been easier to make a judgement if the original poster had included the T4 file for any of us to look at.
This is where it really is at. I mean, should be at.
It's when the file is shared, and then can be tested by someone else, then a solution can be found. Just going on a photo or screenshot itself doesn't quite give all the information one needs to see what caused the error. Perhaps a screen recording (video) may be really helpful because one can actually then see what the person has done. All actions are recorded including what has actually been typed. That way you can see how the actual error has come about.
Just a bit of a side note on this.
Windows 10 has a built in Screen recording part to it (can't remember the Keystrokes for it to pop up) which primarily has been designed for game recording. Then you also have some Graphic cards which come with built in Screen recorders which record game play and desktop recording. NVIDIA GeForce Graphic Cards has an In Game Overlay which does game and Desktop screen recording.
Now, with that said, I find it really helpful to have this with my NVIDIA graphics card because, as many would have seen, I use it for giving answers in resolving e-Sword problems and etc. So, with that all said, done and dusted, If one can do a screen recording, and upload it here, then I think this will help a great deal in finding solutions to problems one faces with e-Sword, and etc
Trust this information is helpful.