An unexpected error when I type in "cvx_setup" which confused me half a month

CVX-error

That is what happened in my MATLAB R2017b:

cvx_setup

CVX: Software for Disciplined Convex Programming ©2014 CVX Research
Version 2.1, Build 1127 (95903bf) Sat Dec 15 18:52:07 2018
Installation info:
Path: E:\cvx
MATLAB version: 9.3 (R2017b)
OS: Windows 7 amd64 version 6.1
Java version: 1.8.0_121
Verfying CVX directory contents:
WARNING: The following extra files/directories were found:
E:\cvx\license\ + 1 files, 0 subdirectories
These files may alter the behavior of CVX in unsupported ways.
Preferences:
Path: C:\Users\Administrator\AppData\Roaming\MathWorks\MATLAB\cvx_prefs.mat
License host:
Username: Administrator
Host ID: f0761cfd98f1 (eth4)
Installed license:
No license installed.
No valid licenses found.
Click here to fill out an academic license request
for the username and first hostid listed above.

Setting CVX paths…done.
Saving updated path…done.
Searching for solvers…5 shims found.
2 solvers initialized (* = default):

  • SDPT3 4.0 {cvx}\sdpt3
    SeDuMi 1.34 {cvx}\sedumi
    3 solvers skipped:
    GLPK
    Could not find a GLPK installation.
    Gurobi unknown {cvx}\gurobi\w64
    Using Gurobi with CVX requires an academic Gurobi license
    and a Gurobi-enabled CVX Professional license.
    Mosek 8.0.0.60 {cvx}\mosek\w64
    Using MOSEK with CVX requires an academic MOSEK license
    or a MOSEK-enabled CVX Professional license.
    Saving updated preferences…done.
    Testing with a simple model…
    UNEXPECTED ERROR: ---------------------------------
    错误: 文件:lorentz.m 行:113 列:5
    “y” 以前似乎用作函数或命令,与其在此处作为变量名称的用法冲突。
    发生此错误的可能原因是您忘记初始化此变量,或者您已使用 load 或 eval 隐式初始化此变量。
    出错 cvx/abs (line 68)
    { xt, w } == lorentz( st, 0 ); %#ok
    出错 cvx/norm (line 56)
    cvx_optval = sum( abs( x ) );
    出错 cvx_setup (line 212)
    minimize( norm(A*x-b,1) );

Please report this error to support, and include entire output of
CVX_SETUP in your support request.

And here is my error situation in MATLAB R2016a:

cvx_setup

CVX: Software for Disciplined Convex Programming ©2014 CVX Research
Version 2.1, Build 1127 (95903bf) Sat Dec 15 18:52:07 2018

Installation info:
Path: E:\cvx
MATLAB version: 9.0 (R2016a)
OS: Windows 7 amd64 version 6.1
Java version: 1.7.0_60
Verfying CVX directory contents:
WARNING: The following extra files/directories were found:
E:\cvx\license\ + 1 files, 0 subdirectories
These files may alter the behavior of CVX in unsupported ways.
Preferences:
Path: C:\Users\Administrator\AppData\Roaming\MathWorks\MATLAB\cvx_prefs.mat
License host:
Username: Administrator
Host ID: f0761cfd98f1 (eth4)
Installed license:
No license installed.
No valid licenses found.
Click here to fill out an academic license request
for the username and first hostid listed above.

Setting CVX paths…already set!
Searching for solvers…5 shims found.
2 solvers initialized (* = default):

  • SDPT3 4.0 {cvx}\sdpt3
    SeDuMi 1.34 {cvx}\sedumi
    3 solvers skipped:
    GLPK
    Could not find a GLPK installation.
    E:\cvx\shims\cvx_gurobi
    unexpected error:
    引用了不存在的字段 ‘folder’。
    出错 cvx_gurobi
    出错 cvx_setup (line 83)
    tsolv = feval( tsolv.sname, tsolv );
    E:\cvx\shims\cvx_mosek
    unexpected error:
    引用了不存在的字段 ‘folder’。
    出错 cvx_mosek
    出错 cvx_setup (line 83)
    tsolv = feval( tsolv.sname, tsolv );
    Saving updated preferences…done.
    Testing with a simple model…
    UNEXPECTED ERROR: ---------------------------------
    错误: 文件:lorentz.m 行:113 列:5
    “y” 以前似乎用作函数或命令,与其在此处作为变量名称的用法冲突。
    发生此错误的可能原因是您忘记初始化此变量,或者您已使用 load 或 eval 隐式初始化此变量。
    出错 cvx/abs (line 68)
    { xt, w } == lorentz( st, 0 ); %#ok
    出错 cvx/norm (line 56)
    cvx_optval = sum( abs( x ) );
    出错 cvx_setup (line 212)
    minimize( norm(A*x-b,1) );

Please report this error to support, and include entire output of
CVX_SETUP in your support request.

It’s really confused me a long time ,and it didn’t get done till now… Is that the verson of R2016a and R2017b not available? should I try some oldder verson? can somebody help me?thanks a lot!

copy the codes directly might makes some misunderstanding,so here I take some PrtScreen:

Errors in R2017b:

And errors in R2016a

I have already figured it out

Excuse me! I met with the same problem. Could you please tell me how you solved it at last? Is it the version problem? Thank you sincerely!