Internal Server Error

On trying to update profile images. Same error with all plugins turned off. PHP7.1 Max memory set to 256M, execution times set to 120 seconds. No issues uploading files from the front end with other plugins. This includes test uploading a 200MB .MP4 file and dozens of 3MB JPG,PNG files. One other item to note. the ADMIN user can change profile pics but no other user roles can. Also, the version prior to 2.0 worked. Also, do you have a list of known plugins that may cause conflict?

[object Error]: {description: “JSON.parse Error: Invalid character at position:1”, message: “JSON.parse Error: Invalid character at position:1”, number: -2146822633, stack: “SyntaxError: JSON.parse Error: Invalid character at position:1 at n.parseJSON (https://kcotb.org/wp-includes/js/jquery/jquery.js?ver=1.12.4:4:16632) at a.parseJSON (https://kcotb.org/wp-includes/js/jquery/jquery-migrate.min.js?ver=1.4.1:2:3802) at onSuccess (https://kcotb.org/wp-content/plugins/ultimate-member/assets/js/um-functions.min.js?ver=4.9.4:1:5165) at d.success (https://kcotb.org/wp-content/plugins/ultimate-member/assets/js/um-fileupload.min.js?ver=4.9.4:1:6247) at t.success (https://kcotb.org/wp-content/plugins/ultimate-member/assets/js/um-jquery-form.min.js?ver=4.9.4:1:9992) at i (https://kcotb.org/wp-includes/js/jquery/jquery.js?ver=1.12.4:2:27444) at j.fireWith (https://kcotb.org/wp-includes/js/jquery/jquery.js?ver=1.12.4:2:28155) at y (https://kcotb.org/wp-includes/js/jquery/jquery.js?ver=1.12.4:4:22290) at c (https://kcotb.org/wp-includes/js/jquery/jquery.js?ver=1.12.4:4:26922)”}
description: “JSON.parse Error: Invalid character at position:1”
message: “JSON.parse Error: Invalid character at position:1”
number: -2146822633
stack: “SyntaxError: JSON.parse Error: Invalid character at position:1 at n.parseJSON (https://kcotb.org/wp-includes/js/jquery/jquery.js?ver=1.12.4:4:16632) at a.parseJSON (https://kcotb.org/wp-includes/js/jquery/jquery-migrate.min.js?ver=1.4.1:2:3802) at onSuccess (https://kcotb.org/wp-content/plugins/ultimate-member/assets/js/um-functions.min.js?ver=4.9.4:1:5165) at d.success (https://kcotb.org/wp-content/plugins/ultimate-member/assets/js/um-fileupload.min.js?ver=4.9.4:1:6247) at t.success (https://kcotb.org/wp-content/plugins/ultimate-member/assets/js/um-jquery-form.min.js?ver=4.9.4:1:9992) at i (https://kcotb.org/wp-includes/js/jquery/jquery.js?ver=1.12.4:2:27444) at j.fireWith (https://kcotb.org/wp-includes/js/jquery/jquery.js?ver=1.12.4:2:28155) at y (https://kcotb.org/wp-includes/js/jquery/jquery.js?ver=1.12.4:4:22290) at c (https://kcotb.org/wp-includes/js/jquery/jquery.js?ver=1.12.4:4:26922)”

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constructor: function SyntaxError() { [native code] }
arguments: null
caller: null
length: 1
name: “SyntaxError”

prototype: Object

constructor: function SyntaxError() { [native code] }
message: “”
name: “SyntaxError”

toString: function toString() { [native code] }

__proto__: Object

__proto__: function() { [native code] }