Fill in the table below, to get the final answer that consists of 2 words.
The two words we are looking for are:
First I noticed that
The title of the question seems to refer to imgur image links. Substituting the ***** in link https://i.stack.imgur.com/****.png with the five character strings in the table, you'll land on an (apparently) non existing pages, each with the note "The image you are requesting does not exist". BUT they're not the standard "404 error" pages of imgur site: each "fake page" is slightly different.
RXCX0 leads to a page where the words are horizontally spaced, more than the standard
CmjLw leads to a page where the words are vertically spaced, more than the standard
ZgmPN leads to a page where the words are on the top of the page
u1y88 leads to a page where the words are on the right side of the page
X8kRy leads to a page where the words are rotated 90° clockwise
These is clearly related with red-orange-yellow dots in the first column of the table.
Filling the table with
'1' or '0' in each column, if each image on the left has one of the 5 characteristic (horizontally/vertically spaced, on the top, on the right, rotated), we obtain a list of binary numbers, that can be easily converted to decimal and then to alphabet letters.
the image in the first blank line is vertically spaced, rotated clockwise and on the top -> 0-1-1-0-1
In considering if an image is spaced horizontally ol vertically, you must consider if it is also rotated! (So an "horizontally spaced" image rotated clockwise appears "vertically spaced")