Try to change the image url or maybe better solution
Is change the setting type from this.
Background_Image:
default: "https://lh3.googleusercontent.com/wcdZLqI--qjG6q7eLaQAFN7FhBWBxVetqDrFgeSTKwNqIEZDHrlPQDgX3iX74RtH5ctTjWcVQAkYTLDqpxbqvPKJcSq5NbfFIc2xc35xQ1-LmAmw1sRI_kR1mvGMUJno6vkKPOf7IsUcVMb7CPtiwM5aCpKOwngXGyoCQ8cb1FYKfTUKvVWbKFDtfb0Gnt9Jq1kvvVRx--dQd8blq6Q0usqj_kPHQKNhSSCv6zSU1zBtv8-TCl1ITeWTprO-X0tx7zgaqspjK6JNrzvquKo8v7MSoIx3yNRHxTLkqOJWRfyBGKXbqfmZKjUuaBGIXYDkSnpJ80ERAQ20R5r8LWsLrtAdtRELusQz_KStRR0YY6DujJ5aWKFqsirINDUDF2jU17wJrr6vPUHBhhDqJwcAplmFJ7_HK_xzOe16GFTIzrKmZ_zMwxCJA8eXw2V5FMBlwsEW7pZObU60g7nA5qouyYp7_0iC1E_2Kv5PG2xsdhR8DvikEM7Zqp3pmiPgvTyooDFTfsVecXtkeazO4EXZc4QSCn0vdLGAtAup9DjUNn9kFhfYr97wED1jMJuS3TDxq_2cAe02ngpnK1Kga64NZMOACWqli_JPEStqRydaCOyNQrGdHMR444AlRfh6TrwAjr-Ls3Pda2MVsS1k2YjxgUp64tX8vHLkW_Asp2Z0iZX2TFKAsfQpJN2CMDesKnDE0wXTq_lFouk2GD0fHHcIj9WQhSBMt31DGcDwTwMT7ByQck81hI3U-Pt2oJhpSXhAqR2WyCg8pobsb2nPKsfzH2XLRr2kzkShKhvkrHJlgY8X3h6QwjqlHt523wuazvyG7nEGvySYdC7pyBi5Qy_YeTEdhhCC0L7EHgUFCgpgkaN4gF9TIE5UyJXDvpWgsTkNt1opCxEgSkCJO2IAt8qsrejCuAeY9dkXAFGaEE-dWVbXyvVayt96pJof-9GG-HZ1iCggB9GuTSD9MIVDiAEr1_LYJbhkT5bepZyqEsXDFV5PHXRtDQJuu9MgWjDBV4PC1Y6K98-3JdTPR7Wko5hkfBIJgvP49aK6l9WvqVyFCTGpmJ1pcIkTeLiGeiD3nr4ydEqsDXFzaDd4DIXlcFVoux3J=w1092-h728-no?authuser=0"
description: "Link to a background image. WARNING: MUST CONTAIN https:// TO WORK"
type: string
To upload setting type and you can upload the image.
Background_Image:
type: upload
default: ""
description: "Upload a background image."