how to fully load data from limited HTTP API?

please, I still need help.
I tried to modify the script from another post, but then Power BI freezes for a second and then returns and error.

error: An error occured when deserializing the results. try to repeat the operation.

below is the full script that I would like someone to review and correct.

in bold, commands that I don´t understand, but I am using anyway because I just adapted from another post, and I think this is the way to get my solution.

let

Source = Json.Document(Web.Contents("https://url.com/token?limit=100&offset=0&date_range=201001010000:201912310000")),

Pagination = List.Skip(List.Generate( () => [offsett = "0"], // Start Value
each Source[offset] <> Source[next_offset], // Condition under which the next execution will happen
each [ WebCall = "https://url.com/token?limit=100&offset="&[offsett]&"date_range=201001010000:201912310000", // retrieve results per call
offsett = if WebCall[next_offset] >= WebCall[offset] then WebCall[next_offset] else WebCall[next_offset] ],// determine the offset for the next execution
each [Value]),1) // Select just the Record of the last step from your query
in
Pagination

I tried to wrap the webcall under Json.Document(Web.Contents()), but this also doesn´t work.

for information, the first line (Source) returns this, which is ok.

i need to use and compare the values from offset and next_offset.

the from_cache value is not good for this script, because it returns false or true even if I still have more data to read.