We recently upgraded from Nop 3.9 to 4.3 and are using the current FedEx V 1.36 plugin. Everything is working properly with the exception of FedEx Standard LTL Freight. We did not encounter this issue with Nop 3.9
If I select FedEx 1Day Freight, FedEx 2Day Freight or FedEx 3 Day Freight as the Carrier Services, the plugin returns the expected astronomically high shipping rates in the shopping cart.
However, if I select FedEx LTL or FedEx National Freight Carrier Services, the shopping cart displays the error "Shipping options could not be loaded".
The log file is of little use as the FedEx plugin posts no errors to the log.
At this point, I think I need some technical assistance to further troubleshoot the issue and modify the FedEx plugin to properly quote FedEx standard LTL rates for FedEx Freight Priority
FedEx Freight Economy services