Keep getting error

[Terrene]

I keep getting an error code that says cannot read"id" unidentified on mobile and also reading long strip

 

[Kurtis]

I am getting a similar error on PC while changing chapters via arrow key "e.manga is undefined," also only while reading in long strip

 

[Aichan]

I've been getting this kind of error for probably a couple of weeks now. Database error, manga is undefined, titles with question marks, those happen a lot.

There have also been cases where changing pages don't change pages. It said it's the next page, but the page is the same as the previous page. And when I press the next arrow, it goes to the next page of the page that doesn't appear. It is the same whether I change pages by pressing the arrow keys or clicking the next page. This rarely happens, though, so I don't know why it's happening. It appears to be happening randomly.