Getting error while saving the changes in the application.

Uncaught SyntaxError: parseJSON (at cfajax.js:889:7)
at Object.decode (cfajax.js:889:7)
at $X.processResponse (cfajax.js:571:24)
at $X.callback (cfajax.js:536:13)
at _7ef (cfajax.js:522:4)
at $A.callback (cfajax.js:179:1)
at req.onreadystatechange (cfajax.js:131:4)

Code at line-889:- throw new SyntaxError("parseJSON");