when i try to create pdf of arabic words then the syncfusion flutter pdf shows that error

: [ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: Invalid argument (The character is not supported by the font.): 1573
: [ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: Invalid argument (The character is not supported by the font.): 1573
E/flutter (26083): #0 _StandardWidthTable._returnValue
package:syncfusion_flutter_pdf/…/fonts/pdf_font_metrics.dart:106
E/flutter (26083): #1 _StandardWidthTable.[]
package:syncfusion_flutter_pdf/…/fonts/pdf_font_metrics.dart:103
E/flutter (26083): #2 PdfStandardFont._getCharWidthInternal
package:syncfusion_flutter_pdf/…/fonts/pdf_standard_font.dart:390
E/flutter (26083): #3 PdfStandardFont._getLineWidth
package:syncfusion_flutter_pdf/…/fonts/pdf_standard_font.dart:415
E/flutter (26083): #4 _PdfStringLayouter._getLineWidth
package:syncfusion_flutter_pdf/…/fonts/pdf_string_layouter.dart:249
E/flutter (26083): #5 _PdfStringLayouter._layoutLine
package:syncfusion_flutter_pdf/…/fonts/pdf_string_layouter.dart:102
E/flutter (26083): #6 _PdfStringLayouter._doLayout
package:syncfusion_flutter_pdf/…/fonts/pdf_string_layouter.dart:46
E/flutter (26083): #7 _PdfStringLayouter._layout
package:syncfusion_flutter_pdf/…/fonts/pdf_string_layouter.dart:34
E/flutter (26083): #8 PdfGridCell._measureHeight
package:syncfusion_flutter_pdf/…/grid/pdf_grid_cell.dart:696
E/flutter (26083): #9 PdfGridCell.height
package:syncfusion_flutter_pdf/…/grid/pdf_grid_cell.dart:243
E/flutter (26083): #10 PdfGridRow._measureHeight
package:syncfusion_flutter_pdf/…/grid/pdf_grid_row.dart:321
E/flutter (26083): #11 PdfGridRow.height
package:syncfusion_flutter_pdf/…/grid/pdf_grid_row.dart:251
E/flutter (26083): #12 _PdfGridLayouter._drawRow
package:syncfusion_flutter_pdf/…/layouting/pdf_grid_layouter.dart:808
E/flutter (26083): #13 _PdfGridLayouter._layoutOnPage
package:syncfusion_flutter_pdf/…/layouting/pdf_grid_layouter.dart:246
E/flutter (26083): #14 _PdfGridLayouter._layoutInternal
package:syncfusion_flutter_pdf/…/layouting/pdf_grid_layouter.dart:1453
E/flutter (26083): #15 PdfGrid._layout
package:syncfusion_flutter_pdf/…/grid/pdf_grid.dart:902
E/flutter (26083): #16 PdfLayoutElement._draw
package:syncfusion_flutter_pdf/…/base/layout_element.dart:37
E/flutter (26083): #17 PdfLayoutElement.draw
package:syncfusion_flutter_pdf/…/base/layout_element.dart:23
E/flutter (26083): #18 PdfGrid.draw
package:syncfusion_flutter_pdf/…/grid/pdf_grid.dart:866
E/flutter (26083): #19 _ManagerReportsChartState._createpdf
package:gas_station/manager/reportsCharts.dart:282
E/flutter (26083): #20 _ManagerReportsChartState.build.
package:gas_station/manager/reportsCharts.dart:232
#21 _ManagerReportsChartState.build.
package:gas_station/manager/reportsCharts.dart:231
E/flutter (26083): #22 _InkResponseState._handleTap
package:flutter/…/material/ink_well.dart:989
E/flutter (26083): #23 GestureRecognizer.invokeCallback
package:flutter/…/gestures/recognizer.dart:182
E/flutter (26083): #24 TapGestureRecognizer.handleTapUp
package:flutter/…/gestures/tap.dart:607
E/flutter (26083): #25 BaseTapGestureRecognizer._checkUp
package:flutter/…/gestures/tap.dart:296
E/flutter (26083): #26 BaseTapGestureRecognizer.handlePrimaryPointer
package:flutter/…/gestures/tap.dart:230
E/flutter (26083): #27 PrimaryPointerGestureRecognizer.handleEvent
package:flutter/…/gestures/recognizer.dart:475
E/flutter (26083): #28 PointerRouter._dispatch
package:flutter/…/gestures/pointer_router.dart:93
E/flutter (26083): #29 PointerRouter._dispatchEventToRoutes.
package:flutter/…/gestures/pointer_router.dart:138
E/flutter (26083): #30 _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:397:8)
E/flutter (26083): #31 PointerRouter._dispatchEventToRoutes
package:flutter/…/gestures/pointer_router.dart:136
E/flutter (26083): #32 PointerRouter.route
package:flutter/…/gestures/pointer_router.dart:122
E/flutter (26083): #33 GestureBinding.handleEvent
package:flutter/…/gestures/binding.dart:439
E/flutter (26083): #34 GestureBinding.dispatchEvent
package:flutter/…/gestures/binding.dart:419
E/flutter (26083): #35 RendererBinding.dispatchEvent
package:flutter/…/rendering/binding.dart:287
E/flutter (26083): #36 GestureBinding._handlePointerEventImmediately
package:flutter/…/gestures/binding.dart:374
E/flutter (26083): #37 GestureBinding.handlePointerEvent
package:flutter/…/gestures/binding.dart:338
E/flutter (26083): #38 GestureBinding._flushPointerEventQueue
package:flutter/…/gestures/binding.dart:296
E/flutter (26083): #39 GestureBinding._handlePointerDataPacket
package:flutter/…/gestures/binding.dart:279
E/flutter (26083): #40 _rootRunUnary (dart:async/zone.dart:1370:13)
E/flutter (26083): #41 _CustomZone.runUnary (dart:async/zone.dart:1265:19)
E/flutter (26083): #42 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7)
E/flutter (26083): #43 _invoke1 (dart:ui/hooks.dart:182:10)
E/flutter (26083): #44 PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:282:7)