[GNC] QIF import Failed

[Fred Tydeman]

Running GC 4.14 on Linux
During an import of a QIF file, I am getting "Failed" on the QIF Import
screen.
The message at the top of the box says there should be details shown below
for my review.  However, there are no details about the failure.

Suggestions on where I should look for the details of the failure?

The entire QIF file is:

!Account
NAssets:Investments
TInvst
^
!Type:Invst
^
D02/26/2021
NMiscExp
CX
T0.12
Mfee
L[Expenses:fees]
^
D03/31/2021
NMiscExp
CX
T0.24
Mfee
L[Expenses:fees]
^
D04/30/2021
NMiscExp
CX
T0.38
Mfee
L[Expenses:fees]
^
D05/28/2021
NMiscExp
CX
T0.51
Mfee
L[Expenses:fees]
^
D06/30/2021
NMiscExp
CX
T0.64
Mfee
L[Expenses:fees]
^

As an experiment,
I changed
 L[Expenses:fees]
to
 LFees

and that imported just fine (although I had to pick the mapping of Fees to
Expenses:Fees during the import process).