Spyder launch error in Anaconda

[Laura]

Hi, 

I have just installed Anaconda3 (Anaconda Navigator 1.9.12) on my macOS Catalina (version 10.15.7) and when I try to launch Spyder (version 4.1.4) via Anaconda, I get this error message : 

Traceback (most recent call last):
File "/Users/lauralan/opt/anaconda3/envs/3.8_Pytorch/bin/spyder", line 11, in
sys.exit(main())
File "/Users/lauralan/opt/anaconda3/envs/3.8_Pytorch/lib/python3.8/site-packages/spyder/app/start.py", line 205, in main
mainwindow.main()
File "/Users/lauralan/opt/anaconda3/envs/3.8_Pytorch/lib/python3.8/site-packages/spyder/app/mainwindow.py", line 3651, in main
mainwindow = run_spyder(app, options, args)
File "/Users/lauralan/opt/anaconda3/envs/3.8_Pytorch/lib/python3.8/site-packages/spyder/app/mainwindow.py", line 3526, in run_spyder
main.setup()
File "/Users/lauralan/opt/anaconda3/envs/3.8_Pytorch/lib/python3.8/site-packages/spyder/app/mainwindow.py", line 844, in setup
self.console = Console(self, namespace=None, exitfunc=self.closing,
File "/Users/lauralan/opt/anaconda3/envs/3.8_Pytorch/lib/python3.8/site-packages/spyder/plugins/console/plugin.py", line 63, in __init__
self.shell = InternalShell(parent, namespace, commands, message,
File "/Users/lauralan/opt/anaconda3/envs/3.8_Pytorch/lib/python3.8/site-packages/spyder/plugins/console/widgets/internalshell.py", line 140, in __init__
PythonShellWidget.__init__(self, parent,
File "/Users/lauralan/opt/anaconda3/envs/3.8_Pytorch/lib/python3.8/site-packages/spyder/plugins/console/widgets/shell.py", line 646, in __init__
ShellBaseWidget.__init__(self, parent, history_filename,
File "/Users/lauralan/opt/anaconda3/envs/3.8_Pytorch/lib/python3.8/site-packages/spyder/plugins/console/widgets/shell.py", line 71, in __init__
self.history = self.load_history()
File "/Users/lauralan/opt/anaconda3/envs/3.8_Pytorch/lib/python3.8/site-packages/spyder/plugins/console/widgets/shell.py", line 499, in load_history
if rawhistory[1] != self.INITHISTORY[1]:
IndexError: list index out of range

What can I do to solve this problem ? I already try to reinstall Anaconda but it's not working. I have searched on other forum but still don't understand the problem..

Thanks to all :)

Laura

[Carlos Córdoba]

Hi Laura,

Please open Terminal.app and run there

    spyder --reset

That should fix your problem.


Cheers,
Carlos

El 3/11/20 a las 4:43 a. m., Laura escribió:

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