Hebrew not rendering

Hi,

This is my test video, which displays Hebrew fine on preview, but does not render the font on Sandbox or Production (I get squares instead of font letters/characters. The English font is displayed correctly.
I see an error message on the editor:
" An unknown error occurred."

This is the render link for the video:

this is the json I’m using:

{
    "timeline": {
        "soundtrack": {
            "src": "https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/music/freepd/motions.mp3",
            "effect": "fadeOut"
        },
        "fonts": [
            {
                "src": "https://templates.shotstack.io/basic/asset/font/opensans-regular.ttf"
            }
        ],
        "background": "#000000",
        "tracks": [
            {
                "clips":[
					   {
						  "asset": {
							  "type": "html",
							  "html": "<p>גדגדגדגדגdsdsd</p>",
							  "css": "p {font-family: 'Rubik Medium'; color: #ffffff; font-size: 42px; text-align: center; }",
							  "width": 400,
							  "height": 200,
							  "background": "transparent",
							  "position": "center"							 
						  },
                        "start": 4,
                        "length": 11,
                        "offset": {
                            "x": -0.25,
                            "y": -0.16
                        },
                        "transition": {
                            "in": "fade",
                            "out": "fade"
                        },
                        "effect": "zoomIn"
                    }
                ]
            },
            {
                "clips": [
                    {
                        "asset": {
                            "type": "video",
                            "src": "https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/footage/earth.mp4",
                            "trim": 5
                        },
                        "start": 0,
                        "length": 15,
                        "transition": {
                            "in": "fade",
                            "out": "fade"
                        }
                    }
                ]
            }
        ]
    },
    "output": {
        "format": "mp4",
        "resolution": "sd"
    }
}

It appears you are referencing a different font as the one declared in the fonts array. That should say font-family: 'Open Sans'.

However it still doesn’t work if referenced correctly because the Open Sans font we store did not support Hebrew. I’ve just updated it to the latest version which supports the Hebrew language.

{
    "timeline": {
        "soundtrack": {
            "src": "https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/music/freepd/motions.mp3",
            "effect": "fadeOut"
        },
        "fonts": [
            {
                "src": "https://templates.shotstack.io/basic/asset/font/opensans-regular.ttf"
            }
        ],
        "background": "#000000",
        "tracks": [
            {
                "clips":[
					   {
						  "asset": {
							  "type": "html",
							  "html": "<p>גדגדגדגדגdsdsd</p>",
							  "css": "p {font-family: 'Open Sans'; color: #ffffff; font-size: 42px; text-align: center; }",
							  "width": 400,
							  "height": 200,
							  "background": "transparent",
							  "position": "center"							 
						  },
                        "start": 4,
                        "length": 11,
                        "offset": {
                            "x": -0.25,
                            "y": -0.16
                        },
                        "transition": {
                            "in": "fade",
                            "out": "fade"
                        },
                        "effect": "zoomIn"
                    }
                ]
            },
            {
                "clips": [
                    {
                        "asset": {
                            "type": "video",
                            "src": "https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/footage/earth.mp4",
                            "trim": 5
                        },
                        "start": 0,
                        "length": 15,
                        "transition": {
                            "in": "fade",
                            "out": "fade"
                        }
                    }
                ]
            }
        ]
    },
    "output": {
        "format": "mp4",
        "resolution": "sd"
    }
}