I updated latest version v12.19.0, and facing this issue randomly.
In invoice, selecting existing Customer, but it doesn’t show.
Already clear cache and website cache, but it doesn’t help.
Anyone is getting the same issue? and how could you fix it.
It could be to do with the Python version that the e=bench environment is using. If you are not on Python 3.7+, try upgrading your Python version to 3.7 and upgrading the bench environment, as detailed in this link:
Hope this helps.
I am using python 3.7.3, on Debian 10
After running # bench update , the issue is gone.