文件转base64 输出base64结果报错

                     console.log('----0')  
                plus.io.resolveLocalFileSystemURL('/static/login.svga', function(entry){  
                    entry.file(function(file){    
                        console.log('----11',file)  
                        var reader = new plus.io.FileReader();    
                        reader.readAsDataURL(file);  
                        console.log('----22')  
                        reader.onloadend = (e) => {    
                            console.log(111111111111)  
                            console.log(e.target.result)  
                            // for(let k in e.target){  
                            //  console.log(k)  
                            // }  
                            // parser.load('data:svga/2.0;base64,'+e.target.result.split(",")[1], function(videoItem) {  

                            //  player.setVideoItem(videoItem);   

                            //  player.startAnimation();  

                            // });

报错
10:01:56.831 ----0 at pages/login/login.vue:21 at app-view.js:408
10:01:56.891 ----11, [Object] {"size":2504457,"type":"1","name":"login.svga","lastModifiedDate":"2021-03-06T02:01:47.000Z","fullPath":"/...} at pages/login/login.vue:24 at app-view.js:408
10:01:56.911 ----22 at pages/login/login.vue:27 at app-view.js:408
10:01:57.071 [Number] 111111111111 at pages/login/login.vue:29 at app-view.js:408
10:01:57.191 Unexpected EOF!