facebook4j.FacebookException: message - redirect_uri isn't an absolute URI. Check RFC 3986. code - 191

[danilomagrini]

I have been using facebook4j for over 1 year. Until yesterday everything worked normally. But, now I get this error: (I dont change my authentication class.)

facebook4j.FacebookException: message - redirect_uri isn't an absolute URI. Check RFC 3986. code - 191

Debug info:
facebook4j.internal.http.HttpClientImpl:debug(67): Request:
facebook4j.internal.http.HttpClientImpl:debug(75): GET https://graph.facebook.com/oauth/access_token?client_id=xxxxxxxxxxxxxxxxxxxx&client_secret=xxxxxxxxxxxxxxxxxxxxxxxx&redirect_uri=null&code=yyyyyyyyyyyyyyyyyyyyyyyy

===>> redirect_uri=null ????? YES!

facebook4j.internal.http.HttpClientImpl:debug(67): User-Agent: facebook4j http://facebook4j.org/ /2.4.6
facebook4j.internal.http.HttpClientImpl:debug(67): Accept-Encoding: gzip
facebook4j.internal.http.HttpClientImpl:debug(67): Response:
facebook4j.internal.http.HttpClientImpl:debug(67): x-fb-trace-id: EZFTzmDgE0w
facebook4j.internal.http.HttpClientImpl:debug(67): HTTP/1.1 400 Bad Request
facebook4j.internal.http.HttpClientImpl:debug(67): Access-Control-Allow-Origin: *
facebook4j.internal.http.HttpClientImpl:debug(67): WWW-Authenticate: OAuth "Facebook Platform" "invalid_request" "redirect_uri isn't an absolute URI. Check RFC 3986."
facebook4j.internal.http.HttpClientImpl:debug(67): Connection: keep-alive
facebook4j.internal.http.HttpClientImpl:debug(67): x-fb-rev: 2852011
facebook4j.internal.http.HttpClientImpl:debug(67): Pragma: no-cache
facebook4j.internal.http.HttpClientImpl:debug(67): Date: Thu, 23 Feb 2017 13:25:20 GMT
facebook4j.internal.http.HttpClientImpl:debug(67): Cache-Control: no-store
facebook4j.internal.http.HttpClientImpl:debug(67): Expires: Sat, 01 Jan 2000 00:00:00 GMT
facebook4j.internal.http.HttpClientImpl:debug(67): Content-Length: 137
facebook4j.internal.http.HttpClientImpl:debug(67): X-FB-Debug: oLgA+jNnn+AdE/p4Q2J+WholLoQ/GaBeKjXTbk0N4dhnBl0R6MuAcY/AQbLiGT7U1JQDwGmhBIT0apwJ43QR4g==
facebook4j.internal.http.HttpClientImpl:debug(67): facebook-api-version: v2.2
facebook4j.internal.http.HttpClientImpl:debug(67): Content-Type: application/json; charset=UTF-8
facebook4j.internal.http.HttpResponseImpl:debug(67): {"error":{"message":"redirect_uri isn't an absolute URI. Check RFC 3986.","type":"OAuthException","code":191,"fbtrace_id":"EZFTzmDgE0w"}}_

Somebody save me?