Gaps in vinyl floor planks

Little late for that now, it needed to be installed tight as it was being laid.
That stuffs a royal pain to work with, tricky to get it lined up with both edges when installing.
I ended up on a few pieces having to use a hair dryer to soften up the glue enough to get them tight, but once it's all laid it's to late to go back and fix.
Any caulking or filler is going to stick out.

That's what I was afraid of! Oh well , thank you!