After install I am getting error "error: cannot create log directory"

[datsnl]

Hello,
I wanted to try SunCAE and installed on my virtual private server. Installation went well and I can see that it installed everything from the script.

Now when I upload the sample.step file, it is giving me "error: cannot create log directory" repeatedly.

[gtheler]

Either

1. Make sure the owner running the web server is the same as the owner of the data directory, or
2. Give 0777 permissions to the data directory

[gtheler]

We should add a "check" page that is shown the very first time someone enters into a fresh installation that should check all the dependencies are there, that the permissions are fine, that the web server is sane, etc.

Do you guys think you can help us with that?

[datsnl]

Hello, I gave permission 0777 to the data directory. Now when I upload sample.step, I get "Invalid step file" error [image: image.png]

…

On Tue, Jan 20, 2026 at 12:20 AM jeremy theler ***@***.***> wrote: We should add a "check" page that is shown the very first time someone enters into a fresh installation that should check all the dependencies are there, that the permissions are fine, that the web server is sane, etc. Do you guys think you can help us with that? — Reply to this email directly, view it on GitHub <#10 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AFOKDPOC4UA2WJTZC5N3UUT4HTR2PAVCNFSM6AAAAACSFJE62CVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTKNJTHEZTGNA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[datsnl]

I would like to add that the same SimplePart.step works on demo SunCAE website. [image: image.png]

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On Tue, Jan 20, 2026 at 12:47 AM Dharmit Thakore ***@***.***> wrote: Hello, I gave permission 0777 to the data directory. Now when I upload sample.step, I get "Invalid step file" error [image: image.png] On Tue, Jan 20, 2026 at 12:20 AM jeremy theler ***@***.***> wrote: > We should add a "check" page that is shown the very first time someone > enters into a fresh installation that should check all the dependencies are > there, that the permissions are fine, that the web server is sane, etc. > > Do you guys think you can help us with that? > > — > Reply to this email directly, view it on GitHub > <#10 (comment)>, > or unsubscribe > <https://github.com/notifications/unsubscribe-auth/AFOKDPOC4UA2WJTZC5N3UUT4HTR2PAVCNFSM6AAAAACSFJE62CVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTKNJTHEZTGNA> > . > You are receiving this because you authored the thread.Message ID: > ***@***.***> >

[gtheler]

The images have been lost, but I think that error is coming from a missing library.
I'll get back at you ASAP.

[datsnl]

This is on my website

This is on demo site

[gtheler]

Can you check if the file has been uploaded or not? There should be a file named original.step somewhere inside data/root/cads/hash .
Maybe the file was not uploaded, it has zero size or it has wrong permissions.

Please let me know. We should add a check on SunCAE's side for all these possible issues so we show a proper error message.

[gtheler]

If I'm not mistaken, it should be in data/root/cads/9186d20ca41dff65ae6ee1494133b003.
Can you post the output of ls -lt in this directory?

[datsnl]

There are 3 folders in cads folder Each has original.step file in it.

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On Tue, 20 Jan 2026, 1:57 am jeremy theler, ***@***.***> wrote: If I'm not mistaken, it should be in data/root/cads/9186d20ca41dff65ae6ee1494133b003. Can you post the output of ls -lt in this directory? — Reply to this email directly, view it on GitHub <#10 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AFOKDPJIYA45K35LDYOR72D4HT5HPAVCNFSM6AAAAACSFJE62CVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTKNJUGAZDCNA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[gtheler]

Each "folder" (technically they are subdirectories) corresponds to each uploaded CAD

[datsnl]

Here is the output of ls -lt

…

-rw-r--r-- 1 dlmtech dlmtech 19778 Jan 19 14:45 original.step

On Tue, Jan 20, 2026, 10:44 Dharmit Thakore ***@***.***> wrote: There are 3 folders in cads folder Each has original.step file in it. On Tue, 20 Jan 2026, 1:57 am jeremy theler, ***@***.***> wrote: > If I'm not mistaken, it should be in > data/root/cads/9186d20ca41dff65ae6ee1494133b003. > Can you post the output of ls -lt in this directory? > > — > Reply to this email directly, view it on GitHub > <#10 (comment)>, > or unsubscribe > <https://github.com/notifications/unsubscribe-auth/AFOKDPJIYA45K35LDYOR72D4HT5HPAVCNFSM6AAAAACSFJE62CVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTKNJUGAZDCNA> > . > You are receiving this because you authored the thread.Message ID: > ***@***.***> >

[gtheler]

Here is the output of ls -lt
-rw-r--r-- 1 dlmtech dlmtech 19778 Jan 19 14:45 original.step

Ok, the file has been uploaded correctly. The user running the web server is dlmtech I assume so there should be no permission issues.
Can you run, from that directory, the following command?

../../../../cadprocessors/gmsh/cadcheck.py

[datsnl]

Here is the message I get. ***@***.***:/home/dlmtech/domains/ suncae.dlmtech.xyz/public_html/suncae/data/root/cads/2dd5cc9b11f47762eb5e718a82b9673a# ../../../../cadpr ocessors/gmsh/cadcheck.py Traceback (most recent call last): File "/home/dlmtech/domains/ suncae.dlmtech.xyz/public_html/suncae/data/root/cads/2dd5cc9b11f47762eb5e718a82b9673a/../../../../cadprocessors/gmsh/cadcheck.py", line 4, in <module> import gmsh File "/home/dlmtech/domains/ suncae.dlmtech.xyz/public_html/suncae/data/root/cads/2dd5cc9b11f47762eb5e718a82b9673a/../../../../bin/gmsh.py", line 92, in <module> lib = CDLL(libpath) ^^^^^^^^^^^^^ File "/usr/lib/python3.12/ctypes/__init__.py", line 379, in __init__ self._handle = _dlopen(self._name, mode) ^^^^^^^^^^^^^^^^^^^^^^^^^ OSError: libGLU.so.1: cannot open shared object file: No such file or directory

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On Tue, Jan 20, 2026 at 8:28 PM jeremy theler ***@***.***> wrote: Here is the output of ls -lt -rw-r--r-- 1 dlmtech dlmtech 19778 Jan 19 14:45 original.step Ok, the file has been uploaded correctly. The user running the web server is dlmtech I assume so there should be no permission issues. Can you run, from that directory, the following command? ../../../../cadprocessors/gmsh/cadcheck.py — Reply to this email directly, view it on GitHub <#10 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AFOKDPNM7ZFNDKTTN3OEJ6D4HX7MRAVCNFSM6AAAAACSFJE62CVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTKNJUG43DGNQ> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[gtheler]

Ok so on our side we should definitely add a check script to make sure everything works ok before allowing people to start using a local installation of SunCAE.

Having said that, you are missing a library for Gmsh:

sudo apt install libglu1-mesa

It is weird to have to install a graphical library for a non-graphical usage.
Maybe we can build a no-X version of Gmsh ourselves. Or try to get https://gmsh.info/bin/Linux/gmsh-nox-git-Linux64-sdk.tgz with the deps.sh script.

Any idea is welcome.

[datsnl]

Hello, I installed libglu1-mesa on my home directory but I am still getting the same error message. Does this library need to be installed on a particular folder?

…

On Tue, Jan 20, 2026 at 11:47 PM jeremy theler ***@***.***> wrote: Ok so on our side we should definitely add a check script to make sure everything works ok before allowing people to start using a local installation of SunCAE. Having said that, you are missing a library for Gmsh: sudo apt install libglu1-mesa It is weird to have to install a graphical library for a non-graphical usage. Maybe we can build a no-X version of Gmsh ourselves. Or try to get https://gmsh.info/bin/Linux/gmsh-nox-git-Linux64-sdk.tgz with the deps.sh script. Any idea is welcome. — Reply to this email directly, view it on GitHub <#10 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AFOKDPK3QMHEEPOATEBAU7D4HYWXJAVCNFSM6AAAAACSFJE62CVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTKNJUHE2DKNQ> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[gtheler]

I am not sure what "I installed libglu1-mesa on my home directory" means.
The gmsh executable has to resolve all the dynamic dependencies it has. If you go to suncae/bin you'll see an executable binary named gmsh. You can check which libraries it depends on by using ldd

gtheler@tom:~/codigos/suncae/bin$ ldd gmsh
        linux-vdso.so.1 (0x00007ffa6c1c9000)
        libgmsh.so.4.14 => /home/gtheler/codigos/suncae/bin/libgmsh.so.4.14 (0x00007ffa66400000)
        libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007ffa6c167000)
        libGLU.so.1 => /lib/x86_64-linux-gnu/libGLU.so.1 (0x00007ffa66388000)
        libGL.so.1 => /lib/x86_64-linux-gnu/libGL.so.1 (0x00007ffa66301000)
        libXrender.so.1 => /lib/x86_64-linux-gnu/libXrender.so.1 (0x00007ffa6c15a000)
        libXcursor.so.1 => /lib/x86_64-linux-gnu/libXcursor.so.1 (0x00007ffa6c14b000)
        libXfixes.so.3 => /lib/x86_64-linux-gnu/libXfixes.so.3 (0x00007ffa6c143000)
        libXext.so.6 => /lib/x86_64-linux-gnu/libXext.so.6 (0x00007ffa662ec000)
        libXft.so.2 => /lib/x86_64-linux-gnu/libXft.so.2 (0x00007ffa662d1000)
        libfontconfig.so.1 => /lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007ffa66283000)
        libXinerama.so.1 => /lib/x86_64-linux-gnu/libXinerama.so.1 (0x00007ffa6627e000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007ffa66277000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007ffa66272000)
        libX11.so.6 => /lib/x86_64-linux-gnu/libX11.so.6 (0x00007ffa6612a000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007ffa6603a000)
        libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007ffa65c00000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007ffa6600d000)
        librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007ffa66006000)
        libgomp.so.1 => /lib/x86_64-linux-gnu/libgomp.so.1 (0x00007ffa65fb1000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007ffa65a0b000)
        /lib64/ld-linux-x86-64.so.2 (0x00007ffa6c1cb000)
        libOpenGL.so.0 => /lib/x86_64-linux-gnu/libOpenGL.so.0 (0x00007ffa65f86000)
        libGLdispatch.so.0 => /lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007ffa65ecd000)
        libGLX.so.0 => /lib/x86_64-linux-gnu/libGLX.so.0 (0x00007ffa65e97000)
        libfreetype.so.6 => /lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007ffa6593b000)
        libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007ffa65e6b000)
        libxcb.so.1 => /lib/x86_64-linux-gnu/libxcb.so.1 (0x00007ffa65910000)
        libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0 (0x00007ffa658fd000)
        libpng16.so.16 => /lib/x86_64-linux-gnu/libpng16.so.16 (0x00007ffa658c5000)
        libbrotlidec.so.1 => /lib/x86_64-linux-gnu/libbrotlidec.so.1 (0x00007ffa658b7000)
        libXau.so.6 => /lib/x86_64-linux-gnu/libXau.so.6 (0x00007ffa658b2000)
        libXdmcp.so.6 => /lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007ffa658aa000)
        libbrotlicommon.so.1 => /lib/x86_64-linux-gnu/libbrotlicommon.so.1 (0x00007ffa65887000)

In you case, for sure you are getting a "not found" error in libGLU.so.1. That means that your system does not have (or does not find) that file. The way to solve it is to install the libglu1-mesa packages like I proposed

sudo apt install libglu1-mesa

That will put libGLU.so.1 in /lib/x86_64-linux-gnu where the operating system can find it.
If you do not have root access, we should think of an alternative.

So, please let me know

1. which GNU/Linux distribution you are using
2. do you have root access?
3. what web server are you using?

BTW, I know you're in Australia. I'm in Argentina so we have 12-ish hours of difference.

[datsnl]

And when I check my Developer tools I get this message {"cad_hash":"2dd5cc9b11f47762eb5e718a82b9673a","status":"error","error":"Invalid STEP file.","show_preview":false}

…

On Tue, Jan 20, 2026 at 11:54 PM Dharmit Thakore ***@***.***> wrote: Hello, I installed libglu1-mesa on my home directory but I am still getting the same error message. Does this library need to be installed on a particular folder? On Tue, Jan 20, 2026 at 11:47 PM jeremy theler ***@***.***> wrote: > Ok so on our side we should definitely add a check script to make sure > everything works ok before allowing people to start using a local > installation of SunCAE. > > Having said that, you are missing a library for Gmsh: > > sudo apt install libglu1-mesa > > It is weird to have to install a graphical library for a non-graphical > usage. > Maybe we can build a no-X version of Gmsh ourselves. Or try to get > https://gmsh.info/bin/Linux/gmsh-nox-git-Linux64-sdk.tgz with the deps.sh > script. > > Any idea is welcome. > > — > Reply to this email directly, view it on GitHub > <#10 (reply in thread)>, > or unsubscribe > <https://github.com/notifications/unsubscribe-auth/AFOKDPK3QMHEEPOATEBAU7D4HYWXJAVCNFSM6AAAAACSFJE62CVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTKNJUHE2DKNQ> > . > You are receiving this because you authored the thread.Message ID: > ***@***.***> >

[gtheler]

I made some changes.

1. The deps.sh script will try to re-use existing pandoc, gmsh and feenox packages installed through apt as long as the versions are recent. If not, it will download recent versions.
2. The downloaded Gmsh binary and libraries come from the no-X version so that should reduce dependencies on system libraries.
3. There is a check.php script that will be run the very first time SunCAE is set up. It will check everything works and if not, will provide information that can help us identify what is going on.

Can you update and start from scratch?

[datsnl]

Thank you for doing this.
I re-installed my server with a clean ubuntu 24.04 install.
And now I installed suncae on it suncae.dlmtech.xyz
Now it is able to upload the step file as seen here

But now, when I click on start, I am getting this error

I checked "data" directory for the access type and it is 0777

What can be the error?

[gtheler]

Good that the uploading worked. Now, three things.

1. An error 500 means "internal server error" which means that there is an error which the server could not recover from. The actual error is in the web server log. If you are using apache that would be in /var/log/apache2/error.log.
2. I am not comfortable with the ownership of the suncae directory (and data) being root:root. How come you ended with this configuration?
3. If you used 25.10 then you could have used gmsh and feenox from apt...