Connexion to "Wifi Name" failed Retrying in "500" milliseconds

Hello,
I'm trying to connect an Arduino ESP8266 LOLIN WEMOS D1 R2 to IoT Cloud, but I've got this message after uploading the sketch :

Connection to "WifiName" failed
Retrying in "500" milliseconds
Connection to "WifiName" failed
Retrying in "500" milliseconds
Connection to "WifiName" failed
Retrying in "500" milliseconds ...

How I can solved that ?

Thank's

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You know I am in the same boat, I do not have a clue as to how to solve that problem either. You may have forgotten we cannot see what you can. Following forum guidelines post your code and if there is external hardware an annotated schematic is a big help especially if you include links to the "Technical" information, not sales such as azon.

I am having the exact same issue... no clue how to solve it...

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