Fumbler - Custom table - Unexpected token l in JSON

[roll20]

Fumbler - Custom table - Unexpected token l in JSON

[geoidesic]

I encountered a similar error:

The fumble chart handout has errors: Unexpected token l in JSON at position 7

I believe this is because the README show invalid JSON (they are valid JavaScript objects shown, but invalid JSON).
Instead I tried this:

[
    {"low": 1,  "high": 10, "result": "Distracted", "effect": "Roll DEX or fall down."},
    {"low": 11, "high": 14, "result": "Negligent", "effect": "Fall down."}
]

(Notice the extra quotation marks).
This produced a different error:

Invalid % roll given, or something went wrong. GM makes something up.

I think this is because it rolled a number that isn't covered by my limited example. When I issued this command, then it worked (i.e. specified the roll):

!fumbler melee 11