Uncaught ReferenceError

The console of my site shows 2 errors:

Uncaught ReferenceError: FB is not defined

and

Uncaught ReferenceError: iframes is not defined

<anonym>
https://apis.google.com/u/0/se/0/_/+1/fastbutton:96:67

ReferenceError: FB is not defined
[Weitere Informationen]
public.js:10:8
Laden fehlgeschlagen für das <script> mit der Quelle “https://apis.google.com/_/scs/apps-static/_/js/k=oz.gapi.en_GB.5smYoHwos4A.O/m=plusone/rt=j/sv=1/d=1/ed=1/am=AQ/rs=AGLTcCPNhTmRSN4QyfhoMdjBKy1ronzlog/t=zcms/cb=gapi.loaded_0&#8221;.
:1
Laden fehlgeschlagen für das <script> mit der Quelle “https://apis.google.com/_/scs/apps-static/_/js/k=oz.gapi.en_GB.5smYoHwos4A.O/m=googleapis_client,gapi_iframes_style_common,gapi_iframes_iframer/am=AQ/rt=j/d=1/t=zcms/rs=AGLTcCPNhTmRSN4QyfhoMdjBKy1ronzlog&#8221;.
fastbutton:96
ReferenceError: iframes is not defined
[Weitere Informationen]
fastbutton:96:67
Laden fehlgeschlagen für das <script> mit der Quelle “https://apis.google.com/_/scs/apps-static/_/js/k=oz.gapi.en_GB.5smYoHwos4A.O/m=auth/exm=plusone/rt=j/sv=1/d=1/ed=1/am=AQ/rs=AGLTcCPNhTmRSN4QyfhoMdjBKy1ronzlog/t=zcms/cb=gapi.loaded_1&#8221;.
:1
No access token

The Widget is showing well, but it destroys/deactivates some other plugins because of this error.