"Uncaught TypeError: Event.observe is not a function" In Version 0.74.0-beta6

[iamaravi]

Hi, I am getting this Js error(Related to Prototype?) at Admin , As a result Submit and other functions not working for me. Frontend working properly though with no error so far.

Env :
Mac OSX 10.10
Apache+PHP , Chrome Version 42.0.2311.90 (64-bit)

[iamaravi]

Self closing it. running deploy fixed it.

php dev/tools/Magento/Tools/View/deploy.php

[VladimirZaets]

Hi @RisingRavi. Thank you for your report.
The issue has been fixed in #15685 by @phoenix128 in 2.3-develop branch
Related commit(s):

• 7259c4bc329c3b9b9541d3113bb46f3ba2f131d3

The fix will be available with the upcoming 2.3.0 release.