End of Input Error in Tellraw

When a player runs a command from a click event via /tellraw, they are running the command as if they have typed the command themselves into the chat. This means they are subject to standard chat limitations, such as the requirement of being OP'd and a 100-character limit.

The command you're trying to have them run exceeds that limit at 192 characters.

You will need to use a shorter command instead. If OP status is a concern, you have to use /trigger, which will modify the executor's score of the "trigger" type without needing to be OP'd.

Prerequisites

1. Adding the "trigger" objective-type, which is the only objective-type that can be used with the /trigger command (meaning you cannot use "dummy").

   /scoreboard objectives add CLICKED trigger
   

2. The commands you would run in /tellraw's click event would instead be:

   /trigger CLICKED set 1
   /trigger CLICKED set 2
   

Clock commands

The following must be run in numerical order on a clock.

1. If a player activates their trigger, it becomes locked and cannot be activated again. You can constantly enable their trigger to avoid locking, though it would be up to you to determine if there's a need to keep it locked.

   /scoreboard players enable @a CLICKED
   

2. Run the nested /tellraw command if the player clicked "Yes", which set their score to 1.

   /tellraw @a[score_CLICKED_min=1,score_CLICKED=1] [{"text":"You are "},{"text":"OFFICIALLY","color":"red"},{"text":"a"},{"text":"DOOFUS","color":"red"},{"text":"\nGo to the bottom-left of the mapname."}]
   

3. Run the nested /tellraw command if the player clicked "No", which set their score to 2.

   /tellraw @a[score_CLICKED_min=2,score_CLICKED=2] {"text":"\n\n\n\n\n\n\n\n\n\n"}
   

4. Reset the player's "CLICKED" score to 0.

   /scoreboard players set @a[score_CLICKED_min=1] CLICKED 0
   

Here is another (possibly easier) way:

Make the Yes command run a /setblock x y z redstone_block. The x y z are linked to two command blocks with what the Yes was originally connected to (except without the extra backslashes), and a /setblock x y z air.