using concatenate causes "invalid parameter" error (%20 space in parameters) about importjson HOT 7 CLOSED

When you are concatenating the date it may be using a number rather than the date itself. I break up the date into its separate pieces when I need to include it. Also, you don't need the concatenate function. You can use an & symbol to accomplish the same thing.

In my sheet I have broken the date into separate columns (G1,H1,F1)
As an example
So my web address :
=http://www.fantasylabs.com/api/lines/4/Anaheim%20Ducks/11-29-2017/

Becomes for the importjson:
="http://www.fantasylabs.com/api/lines/4/Anaheim%20Ducks/"&G1&"-"&H1&"-"&F1&"/"

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Thank you for the reply but I dont think its a date issue because I get the same error when not using the date. The error I am seeing has to something to do with the spaces in the second parameter. The error references line 212 in the code which is var jsondata = UrlFetchApp.fetch(url, fetchOptions);

The spaces in the second parameter is being read as %20. The weird thing is if the directly enter the same parameter into the function it works fine.

Here is another query I tried without a date that also results in the same error:
=importJSON("https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=MSFT&apikey=demo","/Meta Data/2. Symbol", "noHeaders")

If I put the parameters into a different cell then reference it, the function wont work. Copying it exactly into the function works.

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I tried that formula as it is and it works for me. I added as a reference and it worked as well. attached a picture

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Can you try this as the reference cell:
=concatenate("""/Meta Data/","2. Symbol""")

EDIT....I think I know what I am doing wrong...when referencing a cell I dont need quotes. Using your example with cell c62 = "Meta Data/2. Symbol" wont work. But Meta Data/2. Symbol works.

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ahh, that is returning

"/Meta Data/2. Symbol"

which is including the " on the front and end. You have extra " in the formula

Try this
=concatenate("/Meta Data/","2. Symbol")

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BINGO! Thank you VERY VERY much! I've been racking my brain on this all morning.

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this issue took me while before figure out how to solve it , specially the date format to include it in the importjson request , i had to change all my "{" to "%7B" and "}" to "%7D" and the problem with the date when you include , it's converted to numbers , so the workaround for me in google sheets is to convert it to text automatically in another cell using the function ISTEXT in google sheet. for example : A1 has a date format i need , so in C1 i use the function =ISTEXT(a1) and i use C1 in CONCATENATE

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