ErrorInitialize: Only one instance of ErrorClass is supported

[fushichenmu]

I found an issue that the console shows me
fatal:["Error.c":406]:ErrorInitialize: Only one instance of ErrorClass is supported
fatal:Unable to initialize layer-Can't Create
fatal:Error Creating ErrorClass object
fatal:Unable to initialize layer-Can't Create
fatal:Unable to initialize layer-Can't Create
fatal:_NhlCreate:Unable to access "default" App object

when I repeated call pyngl to draw pictrue.

I would identify that I had closed workstation object and any other objects involved with pyngl.

how can I fix this problem?

[olislae]

I met this error too! Each time I need to draw pictures I need to change a new console...Have you solved this error?

[benjaminmenetrier]

I had the same issue in a python script where I call two different functions successively, each one plotting a figure. In the first function, I had the following call at the end:

   Ngl.end()

which made the second function crashing. Now that I've removed it, everything is fine.

Maybe you can try to keep this call at the very end of your python script?