Insert to postgres DB: invalid String format (parsing exception error) - postgresql

Question

I am creating a log db where I track execution steps and catch where it might or might not fail.
I am having issues inserting the Exceptions thrown to a DB.
I am calling an endpoint first in order then query a django database.
In this case I wanted to catch a mistake in the selection_query and thus being unable to fetch the data from the DB.
I want to log this message.
Example:
Exception catch
try:
select_query = "SELECT columnn from row"
cur.execute(select_query)
selected_vals = cur.fetchall()
except Exception as e:
response = insert_into_logging(message = f"{e}", logging_id = 3)
Error
File "/usr/lib/python3.6/json/decoder.py", line 357, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
This is because of the value passed in the message argument.
(message = f"{e}")
It is not insertable in the DB
The value of "e" is:
auto_close_alarm relation "row" does not exist
LINE 1: SELECT columnn from row
^
I tried to pass
str(e)
Value passed: identical output as above
repr(e.args[0])
Output: 'relation "row" does not exist\nLINE 1: SELECT columnn from row\n ^\n'
repr(e)
Value passed: UndefinedTable('relation "row" does not exist\nLINE 1: SELECT columnn from row\n ^\n',)
And multiple other ways but to no avail.
They all result in the same JSONDecodeError.
Basically the key problem is that this is not a valid String format for it to be able to be parsed in the DB.
All I need is a representation of this Exception error for it to be insertable
Flow of data:
insert function
def insert_into_logging(message, logging_id, date_time):
url = f"""url/insert-into-logging/"""
data = {
"message": message,
"logging_id": logging_id,
}
response = r.post(url, data=json.dumps(data, indent=4, sort_keys=True, default=str))
print(response)
return response.json()
Querying DB
def insert_to_logging(request):
from datetime import datetime, timedelta
if request.method != 'POST':
print(request.method)
return JsonResponse({'status':'error', 'message':'Client insertion only accepts post requests.' + str(request.method)})
today = datetime.today()
body = json.loads(request.body)
message = body.get('message')
logging_id = body.get('logging_id')
Logging.objects.create(message = message, logging_id = logging_id, time_stamp = today)
return JsonResponse({'status':'OK', 'message':'Logging successful'})
Django Model
class Logging(models.Model):
objects = GetOrNoneManager()
message = models.CharField(max_length=64, blank=True, null=True)
logging_id = models.IntegerField(blank=True, null=True)
time_stamp = models.DateTimeField(blank=True, null=True)
class Meta:
db_table = 'logging'