WebGL uncaught abort(47) at Error

use websocket-sharp,when start connect: Invoking error handler due to Uncaught abort(47) at Error at jsStackTrace (WEB7.wasm.framework.unityweb:8:22295) at stackTrace [Object.stackTrace] (WEB7.wasm.framework.unityweb:8:22466) at Object.onAbort (http://localhost/WEB7/Build/UnityLoader.js:4:11118) at abort (WEB7.wasm.framework.unityweb:8:474611) at wasm-function[42630]:0xb0b683 at wasm-function[17712]:0x601d21 at wasm-function[42095]:0xaf1591 at wasm-function[17712]:0x601d21 at wasm-function[42104]:0xaf2264 at wasm-function[18885]:0x6488d4 at wasm-function[18107]:0x616aae at wasm-function[42570]:0xb0b28f at dynCall_viiii [Object.dynCall_viiii] (WEB7.wasm.framework.unityweb:8:465440) at invoke_viiii (WEB7.wasm.framework.unityweb:8:362098) at wasm-function[42101]:0xaf1b50 at wasm-function[42108]:0xaf2566 at wasm-function[42568]:0xb0b262 at dynCall_viii [Object.dynCall_viii] (WEB7.wasm.framework.unityweb:8:464717) at invoke_viii (WEB7.wasm.framework.unityweb:8:360805) at wasm-function[18658]:0x63e338 at wasm-function[18689]:0x64104f at wasm-function[41851]:0xae5e54 at wasm-function[18262]:0x623686 at wasm-function[41853]:0xae5e6d at wasm-function[23397]:0x71b77a at wasm-function[41825]:0xae4ede at wasm-function[41891]:0xae70a4 at wasm-function[41904]:0xae750d at wasm-function[41903]:0xae74d2 at wasm-function[16154]:0x5dff78 at wasm-function[42544]:0xb0af61 at dynCall_iiiii [Object.dynCall_iiiii] (WEB7.wasm.framework.unityweb:8:452168) at invoke_iiiii (WEB7.wasm.framework.unityweb:8:337442) at wasm-function[40209]:0xaa1ff0 at wasm-function[39527]:0xa825e7 at wasm-function[4117]:0x17edbe at wasm-function[4116]:0x17ece7 at wasm-function[7749]:0x2bb2d4 at wasm-function[7746]:0x2ba0f6 at wasm-function[10129]:0x3b7f4a at wasm-function[8057]:0x2de254 at wasm-function[10510]:0x3e3081 at wasm-function[10225]:0x3c089f at wasm-function[10225]:0x3c08b4 at wasm-function[10219]:0x3c03ba at wasm-function[10213]:0x3be75d at wasm-function[42558]:0xb0b193 at dynCall_v [Object.dynCall_v] (WEB7.wasm.framework.unityweb:8:460550) at browserIterationFunc (WEB7.wasm.framework.unityweb:8:178424) at runIter [Object.runIter] (WEB7.wasm.framework.unityweb:8:181485),Invoking error handler due to Uncaught abort(47) at Error at jsStackTrace (WEB7.wasm.framework.unityweb:8:22295) at stackTrace [Object.stackTrace] (WEB7.wasm.framework.unityweb:8:22466) at Object.onAbort (http://localhost/WEB7/Build/UnityLoader.js:4:11118) at abort (WEB7.wasm.framework.unityweb:8:474611) at wasm-function[42630]:0xb0b683 at wasm-function[17712]:0x601d21 at wasm-function[42095]:0xaf1591 at wasm-function[17712]:0x601d21 at wasm-function[42104]:0xaf2264 at wasm-function[18885]:0x6488d4 at wasm-function[18107]:0x616aae at wasm-function[42570]:0xb0b28f at dynCall_viiii [Object.dynCall_viiii] (WEB7.wasm.framework.unityweb:8:465440) at invoke_viiii (WEB7.wasm.framework.unityweb:8:362098) at wasm-function[42101]:0xaf1b50 at wasm-function[42108]:0xaf2566 at wasm-function[42568]:0xb0b262 at dynCall_viii [Object.dynCall_viii] (WEB7.wasm.framework.unityweb:8:464717) at invoke_viii (WEB7.wasm.framework.unityweb:8:360805) at wasm-function[18658]:0x63e338 at wasm-function[18689]:0x64104f at wasm-function[41851]:0xae5e54 at wasm-function[18262]:0x623686 at wasm-function[41853]:0xae5e6d at wasm-function[23397]:0x71b77a at wasm-function[41825]:0xae4ede at wasm-function[41891]:0xae70a4 at wasm-function[41904]:0xae750d at wasm-function[41903]:0xae74d2 at wasm-function[16154]:0x5dff78 at wasm-function[42544]:0xb0af61 at dynCall_iiiii [Object.dynCall_iiiii] (WEB7.wasm.framework.unityweb:8:452168) at invoke_iiiii (WEB7.wasm.framework.unityweb:8:337442) at wasm-function[40209]:0xaa1ff0 at wasm-function[39527]:0xa825e7 at wasm-function[4117]:0x17edbe at wasm-function[4116]:0x17ece7 at wasm-function[7749]:0x2bb2d4 at wasm-function[7746]:0x2ba0f6 at wasm-function[10129]:0x3b7f4a at wasm-function[8057]:0x2de254 at wasm-function[10510]:0x3e3081 at wasm-function[10225]:0x3c089f at wasm-function[10225]:0x3c08b4 at wasm-function[10219]:0x3c03ba at wasm-function[10213]:0x3be75d at wasm-function[42558]:0xb0b193 at dynCall_v [Object.dynCall_v] (WEB7.wasm.framework.unityweb:8:460550) at browserIterationFunc (WEB7.wasm.framework.unityweb:8:178424) at runIter [Object.runIter] (WEB7.wasm.framework.unityweb:8:181485)