Проблема при загрузке фото для товара

[microinginer]

edit?id=452&returnUrl=%2Fshop%2Fbackend-product%2Findex&parent_id=1:1571 Uncaught TypeError: url.substr is not a function
    at XMLHttpRequest.open (edit?id=452&returnUrl=%2Fshop%2Fbackend-product%2Findex&parent_id=1:1571)
    at c.uploadFiles (dropzone.min.js?v=1455423581:1)
    at c.processFiles (dropzone.min.js?v=1455423581:1)
    at c.processFile (dropzone.min.js?v=1455423581:1)
    at c.processQueue (dropzone.min.js?v=1455423581:1)
    at dropzone.min.js?v=1455423581:1
XMLHttpRequest.open @ edit?id=452&returnUrl=%2Fshop%2Fbackend-product%2Findex&parent_id=1:1571
c.uploadFiles @ dropzone.min.js?v=1455423581:1
c.processFiles @ dropzone.min.js?v=1455423581:1
c.processFile @ dropzone.min.js?v=1455423581:1
c.processQueue @ dropzone.min.js?v=1455423581:1
(anonymous) @ dropzone.min.js?v=1455423581:1
setTimeout (async)
c.enqueueFile @ dropzone.min.js?v=1455423581:1
(anonymous) @ dropzone.min.js?v=1455423581:1
accept @ dropzone.min.js?v=1455423581:1
c.accept @ dropzone.min.js?v=1455423581:1
c.addFile @ dropzone.min.js?v=1455423581:1
(anonymous) @ dropzone.min.js?v=1455423581:1