HDF error (NC_EHDFERR) in netcdf.close using ncwrite

I used the same script many times with a different computer and an older version of matlab without problems. Now with Matlab R2020b I get this warning and subsequent error. It occurs when a variable is written into an empty netCDF file.

Warning: The following error was caught while executing 'onCleanup' class destructor:
Error using netcdflib
The NetCDF library encountered an error during execution of 'close' function - 'HDF error (NC_EHDFERR)'.

Error in netcdf.close (line 16)
netcdflib('close', ncid);

Error in internal.matlab.imagesci.nc/close (line 139)
                netcdf.close(this.ncRootid);

Error in ncwrite>@()ncObj.close() (line 84)
cleanUp = onCleanup(@()ncObj.close());

Error in onCleanup/delete (line 80)
            obj.task();
Error in ncwrite (line 61)
if nargin > 0

Together with the warning, I get a popup:

"workspace browser will not function if 'built in' or 'workspacefunc' is shadowed"

The next step results in the error:

    Error using netcdflib
The NetCDF library encountered an error during execution of 'inqVar' function - 'HDF error (NC_EHDFERR)'.

Error in netcdf.inqVar (line 26)
[varname,xtype,dimids,natts] = netcdflib('inqVar', ncid, varid);

Error in internal.matlab.imagesci.nc/varInfo (line 1370)
                    netcdf.inqVar(gid,varid);

Error in internal.matlab.imagesci.nc/write (line 752)
            varinfo  = this.varInfo(gid, varid);

Error in ncwrite (line 87)
ncObj.write(varName, varData, start, stride);

Is there anything new in netcdflib of the HDF library that might collide with my code? Sorry, I can`t provide the whole script, it is too nested. I am thankful for every small hint!

[Walter Roberson]

https://www.mathworks.com/matlabcentral/answers/465635-hdf-error-nc_ehdferr-big-netcdf#comment_833982 or https://github.com/Unidata/netcdf-c/issues/2165 might perhaps be relevant

Answer 1

[Jalin]

Have you solved the problem? I also encountered this problem

Thank you very much for any reply

The NetCDF library encountered an error during the 'getVarFloat' function - 'HDF error (NC_EHDFERR)'.