AureliaAzurePipelines - Webpack sourcemaps error

DotNetCoreCLI log.txt

EXEC : error : original.line and original.column are not numbers -- you probably meant to omit the original mapping entirely and only map the generated position. If so, pass null for the original mapping instead of an object with empty or null values. [/home/vsts/work/1/s/project.csproj]
      at SourceMapGenerator_validateMapping [as _validateMapping] (/home/vsts/work/1/s/node_modules/source-map/lib/source-map-generator.js:276:15)
      at SourceMapGenerator_addMapping [as addMapping] (/home/vsts/work/1/s/node_modules/source-map/lib/source-map-generator.js:110:12)
      at /home/vsts/work/1/s/node_modules/source-map/lib/source-map-generator.js:72:17
      at Array.forEach (<anonymous>)
      at BasicSourceMapConsumer.SourceMapConsumer_eachMapping [as eachMapping] (/home/vsts/work/1/s/node_modules/source-map/lib/source-map-consumer.js:157:14)
      at Function.SourceMapGenerator_fromSourceMap [as fromSourceMap] (/home/vsts/work/1/s/node_modules/source-map/lib/source-map-generator.js:48:24)
      at SourceMapSource.node (/home/vsts/work/1/s/node_modules/webpack-sources/lib/SourceMapSource.js:32:35)
      at SourceMapSource.proto.sourceAndMap (/home/vsts/work/1/s/node_modules/webpack-sources/lib/SourceAndMapMixin.js:30:18)
      at getTaskForFile (/home/vsts/work/1/s/node_modules/webpack/lib/SourceMapDevToolPlugin.js:37:30)
      at files.forEach (/home/vsts/work/1/s/node_modules/webpack/lib/SourceMapDevToolPlugin.js:136:20)
      at Array.forEach (<anonymous>)
      at compilation.hooks.afterOptimizeChunkAssets.tap (/home/vsts/work/1/s/node_modules/webpack/lib/SourceMapDevToolPlugin.js:130:12)
      at SyncHook.eval [as call] (eval at create (/home/vsts/work/1/s/node_modules/tapable/lib/HookCodeFactory.js:19:10), <anonymous>:7:1)
      at SyncHook.lazyCompileHook (/home/vsts/work/1/s/node_modules/tapable/lib/Hook.js:154:20)
      at hooks.optimizeChunkAssets.callAsync.err (/home/vsts/work/1/s/node_modules/webpack/lib/Compilation.js:1315:42)
      at _err0 (eval at create (/home/vsts/work/1/s/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:11:1)