Hallo,
Auf meinem Forum tritt dieser Fehler beim Anmelden mit Facebook auf.
Vielen Dank! 
Uncaught SyntaxError: Failed to execute 'querySelector' on 'Document': '#main #_=_, a[name=_=_]' is not a valid selector. Url: https://domain.com/assets/application-8fe8da8f35674e581dcc4a7cc29a6d6a52
Info
Uncaught SyntaxError: Failed to execute 'querySelector' on 'Document': '#main #_=_, a[name=_=_]' is not a valid selector.
Url: https://domain.com/assets/application-8fe8da8f35674e581dcc4a7cc29a6d6a525ca3d46e74d5ac1841dbbe55b35319.js
Zeile: 1
Spalte: 205492
Fenster-Position: https://domain.com
Rückverfolgung
Fehler: Failed to execute 'querySelector' on 'Document': '#main #_=_, a[name=_=_]' is not a valid selector.
bei https://domain.com/assets/application-8fe8da8f35674e581dcc4a7cc29a6d6a525ca3d46e74d5ac1841dbbe55b35319.js:1:205492
bei t.invoke (https://domain.com/assets/ember_jquery-1ed3f3559e6f967733b4088aa729ff7039dff2c09c5a5f787a214b016f58aabc.js:1:490190)
bei e.t.flush (https://domain.com/assets/ember_jquery-1ed3f3559e6f967733b4088aa729ff7039dff2c09c5a5f787a214b016f58aabc.js:1:489198)
bei e.t.flush (https://domain.com/assets/ember_jquery-1ed3f3559e6f967733b4088aa729ff7039dff2c09c5a5f787a214b016f58aabc.js:1:491205)
bei e.t._end (https://domain.com/assets/ember_jquery-1ed3f3559e6f967733b4088aa729ff7039dff2c09c5a5f787a214b016f58aabc.js:1:496596)
bei e.t.end (https://domain.com/assets/ember_jquery-1ed3f3559e6f967733b4088aa729ff7039dff2c09c5a5f787a214b016f58aabc.js:1:493157)
bei e.t._run (https://domain.com/assets/ember_jquery-1ed3f3559e6f967733b4088aa729ff7039dff2c09c5a5f787a214b016f58aabc.js:1:497114)
bei e.t.run (https://domain.com/assets/ember_jquery-1ed3f3559e6f967733b4088aa729ff7039dff2c09c5a5f787a214b016f58aabc.js:1:493765)
bei c (https://domain.com/assets/ember_jquery-1ed3f3559e6f967733b4088aa729ff7039dff2c09c5a5f787a214b016f58aabc.js:1:360333)
bei Object.a.success (https://domain.com/assets/application-8fe8da8f35674e581dcc4a7cc29a6d6a525ca3d46e74d5ac1841dbbe55b35319.js:1:194176)