Error numpy.linalg.LinAlgError: Eigenvalues did not converge during model uncertainty propagation

[andreaegg]

When fitting data with my own custom models, I get the following error:

Traceback (most recent call last):
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "c:\Users\andre\.vscode\extensions\ms-python.python-2022.4.1\pythonFiles\lib\python\debugpy\__main__.py", line 45, in <module>
    cli.main()
  File "c:\Users\andre\.vscode\extensions\ms-python.python-2022.4.1\pythonFiles\lib\python\debugpy/..\debugpy\server\cli.py", line 444, in main
    run()
  File "c:\Users\andre\.vscode\extensions\ms-python.python-2022.4.1\pythonFiles\lib\python\debugpy/..\debugpy\server\cli.py", line 285, in run_file
    runpy.run_path(target_as_str, run_name=compat.force_str("__main__"))
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\runpy.py", line 263, in run_path
    pkg_name=pkg_name, script_name=fname)
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\runpy.py", line 96, in _run_module_code
    mod_name, mod_spec, pkg_name, script_name)
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "y:\projects\mqr_nitroxides\analysis\debug.py", line 133, in <module>
    resultlocal = dl.fit(currmodel,currsig,bootstrap=100)
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\site-packages\deerlab\model.py", line 1010, in fit
    param_uq = bootstrap_analysis(bootstrap_fcn,ysplit,fitresults.model,samples=bootstrap)
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\site-packages\deerlab\bootstrap_analysis.py", line 151, in bootstrap_analysis
    out = _ProgressParallel(n_jobs=cores,total=nSamples,use_tqdm=verbose)(delayed(bootsample)() for _ in range(nSamples))     
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\site-packages\deerlab\bootstrap_analysis.py", line 193, in __call__
    return Parallel.__call__(self, *args, **kwargs)
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\site-packages\joblib\parallel.py", line 1044, in __call__   
    while self.dispatch_one_batch(iterator):
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\site-packages\joblib\parallel.py", line 859, in dispatch_one_batch
    self._dispatch(tasks)
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\site-packages\joblib\parallel.py", line 777, in _dispatch   
    job = self._backend.apply_async(batch, callback=cb)
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\site-packages\joblib\_parallel_backends.py", line 208, in apply_async
    result = ImmediateResult(func)
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\site-packages\joblib\_parallel_backends.py", line 572, in __init__
    self.results = batch()
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\site-packages\joblib\parallel.py", line 263, in __call__    
    for func, args, kwargs in self.items]
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\site-packages\joblib\parallel.py", line 263, in <listcomp>  
    for func, args, kwargs in self.items]
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\site-packages\deerlab\bootstrap_analysis.py", line 146, in bootsample
    out = fcn(Vsample)
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\site-packages\deerlab\model.py", line 1006, in bootstrap_fcn
    fit = fitfcn(np.concatenate(ysim))
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\site-packages\deerlab\model.py", line 757, in <lambda>      
    fitfcn_ = lambda y: fitfcn(y,[None])
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\site-packages\deerlab\model.py", line 994, in <lambda>      
    extrapenalty=extrapenalties(penweights), **kwargs)
psd
    eigval, eigvec = np.linalg.eigh(Asym)
  File "<__array_function__ internals>", line 6, in eigh  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\site-packages\numpy\linalg\linalg.py", line 1470, in eigh   
    w, vt = gufunc(a, signature=signature, extobj=extobj)
  File "C:\Users\andre\AppData\Local\Programs\Python\Python37\lib\site-packages\numpy\linalg\linalg.py", line 94, in _raise_linalgerror_eigenvalues_nonconvergence
    raise LinAlgError("Eigenvalues did not converge")numpy.linalg.LinAlgError: Eigenvalues did not converge

The error seems to appear during the call to numpy.linalg.eigh but not when using scipy.linalg.eigh.