Invalid svg File when saving diagramm

[sjib]

When saving a diagramm as svg I get an invalid svg file.

In opening with a browser (Microsoft Edge / Firefox) I get an error:

XML-Verarbeitungsfehler: nicht wohlgeformt Adresse: file:///C:/Daten/uml_diagramm.svg Zeile Nr. 16, Spalte 167: <desc>Creator: FreeHEP Graphics2D Driver Producer: org.freehep.graphicsio.svg.SVGGraphics2D Revision Source: Date: Freitag, 23. Dezember 2022 um 14:10:40 Mitteleurop� 281.125 Q 425.560546875 282.078125 424.857421875 282.609375 Q 424.154296875 283.140625 423.076171875 283.140625 Q 421.716796875 283.140625 420.904296875 282.296875 Q 420.107421875 281.453125 420.107421875 279.9375 Q 420.107421875 278.375 420.919921875 277.515625 Q 421.732421875 276.640625 423.013671875 276.640625 Q 424.263671875 276.640625 425.044921875 277.484375 Q 425.841796875 278.328125 425.841796875 279.875 Q 425.841796875 279.96875 425.841796875 280.15625 L 421.201171875 280.15625 Q 421.263671875 281.1875 421.779296875 281.734375 Q 422.294921875 282.265625 423.076171875 282.265625 Q 423.654296875 282.265625 424.060546875 281.96875 Q 424.482421875 281.65625 424.716796875 281 z M 421.263671875 279.296875 L 424.732421875 279.296875 Q 424.669921875 278.5 424.341796875 278.109375 Q 423.826171875 277.5 423.029296875 277.5 Q 422.294921875 277.5 421.794921875 277.984375 Q 421.310546875 278.46875 421.263671875 279.296875 z M 431.203125 280.71875 L 432.234375 280.859375 Q 432.0625 281.921875 431.359375 282.53125 Q 430.65625 283.140625 429.640625 283.140625 Q 428.359375 283.140625 427.578125 282.3125 Q 426.8125 281.46875 426.8125 279.90625 Q 426.8125 278.90625 427.140625 278.15625 Q 427.484375 277.390625 428.15625 277.015625 Q 428.84375 276.640625 429.65625 276.640625 Q 430.65625 276.640625 431.296875 277.15625 Q 431.953125 277.65625 432.140625 278.609375 L 431.109375 278.765625 Q 430.96875 278.140625 430.59375 277.828125 Q 430.21875 277.5 429.6875 277.5 Q 428.890625 277.5 428.390625 278.078125 Q 427.890625 278.640625 427.890625 279.875 Q 427.890625 281.140625 428.375 281.703125 Q 428.859375 282.265625 429.625 282.265625 Q 430.25 282.265625 430.65625 281.890625 Q 431.078125 281.515625 431.203125 280.71875 z M 433.140625 283 L 433.140625 274.40625 L 434.1875 274.40625 L 434.1875 277.484375 Q 434.921875 276.640625 436.046875 276.640625 Q 436.75 276.640625 437.25 276.921875 Q 437.765625 277.1875 437.984375 277.671875 Q 438.203125 278.140625 438.203125 279.0625 L 438.203125 283 L 437.15625 283 L 437.15625 279.0625 Q 437.15625 278.265625 436.8125 277.90625 Q 436.46875 277.546875 435.84375 277.546875 Q 435.375 277.546875 434.953125 277.796875 Q 434.546875 278.03125 434.359375 278.453125 Q 434.1875 278.859375 434.1875 279.59375 L 434.1875 283 L 433.140625 283 z M 444.064453125 281 L 445.158203125 281.125 Q 444.908203125 282.078125 444.205078125 282.609375 Q 443.501953125 283.140625 442.423828125 283.140625 Q 441.064453125 283.140625 440.251953125 282.296875 Q 439.455078125 281.453125 439.455078125 279.9375 Q 439.455078125 278.375 440.267578125 277.515625 Q 441.080078125 276.640625 442.361328125 276.640625 Q 443.611328125 276.640625 444.392578125 277.484375 Q 445.189453125 278.328125 445.189453125 279.875 Q 445.189453125 279.96875 445.189453125 280.15625 L 440.548828125 280.15625 Q 440.611328125 281.1875 441.126953125 281.734375 Q 441.642578125 282.265625 442.423828125 282.265625 Q 443.001953125 282.265625 443.408203125 281.96875 Q 443.830078125 281.65625 444.064453125 281 z M 440.611328125 279.296875 L 444.080078125 279.296875 Q 444.017578125 278.5 443.689453125 278.109375 Q 443.173828125 277.5 442.376953125 277.5 Q 441.642578125 277.5 441.142578125 277.984375 Q 440.658203125 278.46875 440.611328125 279.296875 z"/> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------^

Problem scheint der Umlaut ä in Mitteleuropäische zu sein. Wenn ich das im Texteditor im svg korrigiere auf ae statt ä ist alles ok und ich kann die Datei öffnen.