Why am I getting 'Data tag parsing failed: Unbalanced quotation' for this command? [duplicate]

When you activate a clickEvent via /tellraw or from books, you are clicking as if you've written the command yourself in the chat. This means you are subject to chat limits, being the requirement of OP status and more importantly a 100-character limit. Your command is exceeding that limit, thus gets trimmed and throws an error because the resulting trim breaks syntax.

The fix is to use a shorter commands or rely on an external mechanism to detect players that have clicked. For OP'd players, you can use basic /scoreboard commands. For non-OP'd players, you can use /trigger.

For example, the command you'd have players run in a clickEvent would be:

/scoreboard players set @a[c=1] OBJ 1

And in an external mechanism you would provide the player with that score the item and then reset their score.

/give @a[score_OBJ_min=1,score_OBJ=1] minecraft:stone 1 0
/scoreboard players set @a[score_OBJ_min=1] OBJ 0

Like Skylinerw said, you are subject to chat limits, so the command gets trimmed.

However, command blocks do not have this limit (or at least have an extremely high one).

Place down a command block and put your command in there. Then, run it using a:

• lever
• button
• redstone block
• redstone torch
• powered comparator
• chain command block feeding into it
• powered repeater