Using FormatLocalTime method inside a plugin results in an error

Save the following code snippet as local plugin (step 1):

local now = DateTime.now()
now:FormatLocalTime("LL", "en-150")

Restart studio (step 2), and open any place (step 3). You should get a following error:

Error in loading DateTimeLocaleConfig file of en-150 (Unable to load rbxasset://configs/DateTimeLocaleConfigs/en-150.json)

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If you don’t get the error, try to repeat the last 2 steps (2,3) few more times.

Try “en_150”. With the underscore, you should not see any errors.