crash with this config

[superiums]

waybar crashed and trace/debug report:

** (waybar:7316): ERROR **: 10:57:37.872: 
unhandled exception (type std::exception) in signal handler:
what: Type is not convertible to string

after hours of replace and trace, i've found this was caused by this config:

"temperature#amdgpu": {
    "hwmon-path": "/sys/class/hwmon/hwmon3/temp1_input",
    "thermal-zone":3,
    "critical-threshold": 80,
    "format-critical": "{temperatureC}°C {icon} ",
    "format": "☢{temperatureC}°C ",
    "tooltip-format": "amdgpu {temperatureC}°C {icon}",
    "format-icons": [
      "",
      "",
      ""
    ]
  },

the issue is the {icon} in tooltip-format.

suggest:

1. debug should show the line number.
2. if the {icon} was not avaluable, ignore and warn it.

[euclio]

I'm not able to reproduce. Can you upload your full config file?

[superiums]

thanks for attention!
i tried to upload it but occured some trouble , so i pasted it here:

{
  "layer": "top",
  "height": 26,
  "modules-left": [
    "sway/workspaces",
    "sway/mode",
    "sway/window"
  ],
  "modules-center": [
    "wlr/taskbar"
  ],
  "modules-right": [
    "network",
    "pulseaudio",
    "bluetooth",
    "cpu",
    "memory",
    "disk#root",
    "disk#home",
    "disk#var",
    "temperature#amdgpu",
    "temperature#nvme",
    "backlight",
    "battery",
    "idle_inhibitor",
    "clock",
    "tray"
  ],
  "clock": {
    "interval": 60,
    "timezone": "Asia/Shanghai",
    "tooltip-format": "<big>{:%Y-%m-%d %t%A}</big>\n\n<tt><big>{calendar}</big></tt>",
    "format": " {:%d,%a %H:%M}",
    "format-alt": "{:%Y-%m-%d}"
  },
  "cpu": {
    "format": " {usage}%",
    "states": {
      "warning": 70,
      "critical": 90
    }
  },
  "disk#root": {
    "path": "/",
    "format": "🛳️ {percentage_used}%",
    "states": {
      "warning": 80,
      "critical": 90
    },
    "on-click": "dolphin /"
  },
  "disk#home": {
    "path": "/home",
    "format": "🏛 {percentage_used}%",
    "states": {
      "warning": 80,
      "critical": 90
    },
    "on-click": "dolphin ~"
  },
  "disk#var": {
    "path": "/var",
    "format": "🏞 {percentage_used}%",
    "states": {
      "warning": 80,
      "critical": 90
    },
    "on-click": "dolphin /var"
  },
  "memory": {
    "interval": 30,
    "format": " {used:0.1f}G",
    "tooltip-format": "已使用{}%",
    "states": {
      "warning": 70,
      "critical": 90
    }
  },
  "backlight": {
    "format": "{icon} {percent}%",
    "format-icons": [
      ""
    ]
  },
  "sway/language": {
    "format": " {}",
    "min-length": 5
  },
  "battery": {
    "bat": "BAT0",
    "design-capacity": true,
    "states": {
      "warning": 30,
      "critical": 15
    },
    "format": "{icon} {capacity}%",
    "format-charging": " {capacity}%",
    "format-icons": [
      "",
      "",
      "",
      "",
      ""
    ]
  },
  "network": {
    "interval": 5,
    "min-length": 22,
    "interface": "wlp1s0",
    "format-wifi": "  {bandwidthUpBits}  {bandwidthDownBits}",
    "format-ethernet": " {ipaddr}/{cidr}",
    "format-linked": " {ifname}",
    "format-disconnected": " 已断开⚠",
    "tooltip-format": "{ifname} via {gwaddr}\n{essid}\t {signalStrength}%\n {bandwidthUpBits}\n {bandwidthDownBits}\n",
    "format-alt": "{ifname}: {ipaddr}/{cidr}",
    "on-click": "nm-connection-editor"
  },
  "pulseaudio": {
    "format": "{icon} {volume}%   {format_source}",
    "format-bluetooth": "{icon} {volume}%   {format_source}",
    "format-bluetooth-muted": " {icon}   {format_source}",
    "format-muted": "   {format_source}",
    "format-source": " {volume}%",
    "format-source-muted": "",
    "format-icons": {
      "headphone": "",
      "hands-free": "",
      "headset": "",
      "phone": "",
      "portable": "",
      "car": "",
      "default": [
        "",
        "",
        ""
      ]
    },
    "on-click": "pavucontrol"
  },
  "bluetooth": {
    "format": "{icon}",
    "tooltip-format": "bluetooth: {status}\n{}",
    "format-icons": {
      "enabled": "",
      "disabled": "🅱️"
    },
    "on-click": "bluedevil-wizard"
  },
  "sway/mode": {
    "format": "{}"
  },
  "mpd": {
    "format": "{stateIcon} {consumeIcon}{randomIcon}{repeatIcon}{singleIcon}{artist} - {album} - {title} ({elapsedTime:%M:%S}/{totalTime:%M:%S}) ⸨{songPosition}|{queueLength}⸩ {volume}% ",
    "format-disconnected": "Disconnected ",
    "format-stopped": "{consumeIcon}{randomIcon}{repeatIcon}{singleIcon}Stopped ",
    "unknown-tag": "N/A",
    "interval": 2,
    "consume-icons": {
      "on": " "
    },
    "random-icons": {
      "off": " ",
      "on": " "
    },
    "repeat-icons": {
      "on": " "
    },
    "single-icons": {
      "on": "1 "
    },
    "state-icons": {
      "paused": "",
      "playing": ""
    },
    "tooltip-format": "MPD (connected)",
    "tooltip-format-disconnected": "MPD (disconnected)"
  },
  "idle_inhibitor": {
    "format": "{icon}",
    "format-icons": {
      "activated": "",
      "deactivated": ""
    }
  },
  "keyboard-state": {
    "numlock": true,
    "capslock": true,
    "format": "{name} {icon}",
    "format-icons": {
      "locked": "",
      "unlocked": ""
    }
  },
  "temperature#nvme": {
    "hwmon-path": "/sys/class/hwmon/hwmon1/temp1_input",
    "thermal-zone": 1,
    "critical-threshold": 80,
    "format-critical": "{temperatureC}°C {icon} ",
    "format": "▘{temperatureC}°C  ",
    "tooltip-format": "nvme: {temperatureC}°C {icon}",
    "format-icons": [
      "",
      "",
      ""
    ]
  },
  "temperature#amdgpu": {
    "hwmon-path": "/sys/class/hwmon/hwmon3/temp1_input",
    "thermal-zone": 3,
    "critical-threshold": 80,
    "format-critical": "{temperatureC}°C {icon} ",
    "format": "☢{temperatureC}°C ",
    "tooltip-format": "amdgpu: {temperatureC}°C {icon}",
    "format-icons": [
      "",
      "",
      ""
    ]
  },
  "wlr/taskbar": {
    "align": "center",
    "format": "{icon}{short_state}",
    "icon-size": 21,
    "icon-theme": "Breeze-dark",
    "tooltip-format": "[{app_id}]\n{title}\n{state}",
    "on-click": "activate",
    "on-click-middle": "close",
    "ignore-list": [
      "Alacritty"
    ],
    "app_ids-mapping": {
      "firefoxdeveloperedition": "firefox-developer-edition"
    }
  },
  "sway/window": {
    "format": "{}",
    "max-length": 50,
    "align": "left",
    "rewrite": {
      "(.*) - Mozilla Firefox": "🌎 $1",
      "(.*) - fish": "> [$1]"
    }
  },
  "tray": {
    "icon-size": 16,
    "spacing": 8
  }
}