Workflowy import prompts an error message in linux

workflowy opml import prompts an error message in the linux desktop app but works perfectly with the logseq web application

System: Kernel: 5.4.0-122-generic x86_64 bits: 64 compiler: gcc v: 9.4.0 Desktop: Xfce 4.16.0
tk: Gtk 3.24.20 wm: xfwm4 dm: LightDM Distro: Linux Mint 20.3 Una
base: Ubuntu 20.04 focal
Machine: Type: Laptop System: FUJITSU product: LIFEBOOK A512 v: N/A serial: Chassis:
type: 10 serial:
Mobo: FUJITSU model: FJNBB29 serial: UEFI: FUJITSU // Phoenix v: Version 1.16
date: 10/23/2013
CPU: Topology: Dual Core model: Intel Pentium 2020M bits: 64 type: MCP arch: Ivy Bridge
rev: 9 L2 cache: 2048 KiB
flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 9578
Speed: 2376 MHz min/max: 1200/2400 MHz Core speeds (MHz): 1: 2395 2: 2395