Error occured when loading new files into Load Prompts From File (Inspire)

[CocoPuffLeo]

So during my testing I have encounter this issue multiple times, where the Unzip Prompt node seems to unable to identify the new text file I have inputed. At first I thought it is just and refresh issue, so I refreshed the node and the browser, but it did not work.
I switch the prompt file to another preexisting file, and it works just fine, so I thought it is the prompts issue, but it wasn't as it is the same as the preexisiting file.

During my testing, I frequently encountered an issue where the Unzip Prompt node failed to recognize the newly added text file. Initially, I assumed it was a refresh problem, so I tried refreshing/restarting the node and the browser, but that didn’t help. I then switched to a different preexisting file, and it worked fine, leading me to believe it was a problem with the prompts. However, the prompts were identical to those in the preexisting file, so that wasn’t the case. But for some reason it would work just fine from time to time, or just after a while, I can't figure out what I did made it work. Fluke?

Have this issue happened before?

[CocoPuffLeo]

OK, I am a blind man, turns out my prompts are missing the negative prompt section. Added it and it works now.

Do I have to add any words in the negative prompt section or can I just leave it empty? As I do not need the negative prompts in the text file, I have added them separately.