Need more debugging information in case if notebook parsing fails #1226
Description
When running nbdev_trust I get a long stack trace which ends with
File "/home/mib07150/miniconda3/envs/py38/lib/python3.8/json/decoder.py", line 353, in raw_decode
obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Expecting ',' delimiter: line 211 column 4 (char 7193)
However, there is more than 30 notebooks in this folder, and there is no sign of which of these is the problematic one -- nor what to do to make it parse-able again
I think that there might be an incompatibility between plotly and the json parser used by nbdev
I will not submit the problematic notebook, because I don't even know which one is it, nor which section of it
desirable info:
-> Notebook name
-> Section or cell number
-> surrounding "user-readable text" so that the offending section can be found easily