[Error when verifying.]

Help me. please! It's an error message while tying to burn a BD with my Samsung Portable BD Writer Model SE-506.

Here's the log:

I 13:18:06 ImgBurn Version 2.5.8.0 started!
I 13:18:06 Microsoft Windows 8 Core x64 Edition (6.2, Build 9200)
I 13:18:06 Total Physical Memory: 8 278 300 KiB - Available: 5 888 272 KiB
W 13:18:06 AnyDVD can interfere with ImgBurn's ability to verify accurately, please ensure it's disabled!
I 13:18:06 Initialising SPTI...
I 13:18:06 Searching for SCSI / ATAPI devices...
I 13:18:06 -> Drive 1 - Info: TSSTcorp BDDVDW SE-506BB TS00 (F:) (USB 2.0)
I 13:18:08 -> Drive 2 - Info: hp DVDRAM GT80N R102 (E:) (SATA)
I 13:18:08 Found 1 DVD±RW/RAM and 1 BD-RE XL!
I 13:20:03 Operation Started!
I 13:20:03 Building Image Tree...
I 13:20:03 Calculating Totals...
I 13:20:03 Preparing Image...
I 13:20:03 Contents: 59 Files, 16 Folders
I 13:20:03 Content Type: BD Video
I 13:20:03 Data Type: MODE1/2048
I 13:20:03 File System(s): UDF (2.50)
I 13:20:03 Volume Label: LONG WEEKEND
I 13:20:03 Size: 24 414 488 748 bytes
I 13:20:03 Sectors: 11 921 173
I 13:20:03 Image Size: 24 415 698 944 bytes
I 13:20:03 Image Sectors: 11 921 728
I 13:20:06 Operation Successfully Completed! - Duration: 00:00:02
I 13:20:06 Operation Started!
I 13:20:06 Source File: -==/\/[BUILD IMAGE]\/\==-
I 13:20:06 Source File Sectors: 11 921 728 (MODE1/2048)
I 13:20:06 Source File Size: 24 415 698 944 bytes
I 13:20:06 Source File Volume Identifier: LONG WEEKEND
I 13:20:06 Source File Volume Set Identifier: 49576A8100B5E8B5
I 13:20:06 Source File Application Identifier: ImgBurn v2.5.8.0
I 13:20:06 Source File Implementation Identifier: ImgBurn
I 13:20:06 Source File File System(s): UDF (2.50)
I 13:20:06 Destination Device: [0:0:0] TSSTcorp BDDVDW SE-506BB TS00 (F:) (USB)
I 13:20:06 Destination Media Type: BD-R (Disc ID: CMCMAG-BA5-000)
I 13:20:06 Destination Media Supported Write Speeds: 2x; 4x; 6x
I 13:20:06 Destination Media Sectors: 12 219 392
I 13:20:06 Write Mode: BD
I 13:20:06 Write Type: DAO
I 13:20:06 Write Speed: 1x
I 13:20:06 Hardware Defect Management Active: No
I 13:20:06 BD-R Verify Not Required: Yes
I 13:20:06 Link Size: Auto
I 13:20:06 Lock Volume: Yes
I 13:20:06 Test Mode: No
I 13:20:06 OPC: No
I 13:20:06 BURN-Proof: Enabled
W 13:20:06 Write Speed Miscompare! - Wanted: 4 496 KB/s (1x), Got: 8 992 KB/s (2x)
W 13:20:06 The drive only supports writing these discs at 2x; 4x; 6x.
I 13:20:59 Filling Buffer... (80 MiB)
I 13:21:00 Writing LeadIn...
I 13:21:08 Writing Session 1 of 1... (1 Track, LBA: 0 - 11921727)
I 13:21:08 Writing Track 1 of 1... (MODE1/2048, LBA: 0 - 11921727)
I 13:44:34 Synchronising Cache...
I 13:44:39 Closing Track...
I 13:44:40 Finalising Disc...
I 13:45:29 Exporting Graph Data...
I 13:45:29 Graph Data File: C:\Users\User\AppData\Roaming\ImgBurn\Graph Data Files\TSSTcorp_BDDVDW_SE-506BB_TS00_23-ОКТЯБРЬ-2016-Г-_13-20_CMCMAG-BA5-000_1x.ibg
I 13:45:29 Export Successfully Completed!
I 13:45:29 Operation Successfully Completed! - Duration: 00:25:22
I 13:45:29 Average Write Rate: 16 958 KiB/s (3.9x) - Maximum Write Rate: 26 560 KiB/s (6.0x)
I 13:45:29 Cycling Tray before Verify...
W 13:55:37 Waiting for device to become ready...
I 13:55:46 Device Ready!
I 13:55:47 Operation Started!
I 13:55:47 Source Device: [0:0:0] TSSTcorp BDDVDW SE-506BB TS00 (F:) (USB)
I 13:55:47 Source Media Type: BD-R (Disc ID: CMCMAG-BA5-000)
I 13:55:47 Source Media Supported Read Speeds: 2,2x; 4x; 6x
I 13:55:47 Source Media Supported Write Speeds: 2x; 4x; 6x
I 13:55:47 Source Media Sectors: 11 921 728
I 13:55:47 Source Media Size: 24 415 698 944 bytes
I 13:55:47 Image File: -==/\/[BUILD IMAGE]\/\==-
I 13:55:47 Image File Sectors: 11 921 728 (MODE1/2048)
I 13:55:47 Image File Size: 24 415 698 944 bytes
I 13:55:47 Image File Volume Identifier: LONG WEEKEND
I 13:55:47 Image File Volume Set Identifier: 49576A8100B5E8B5
I 13:55:47 Image File Application Identifier: ImgBurn v2.5.8.0
I 13:55:47 Image File Implementation Identifier: ImgBurn
I 13:55:47 Image File File System(s): UDF (2.50)
I 13:55:47 Read Speed (Data/Audio): MAX / MAX
I 13:55:48 Read Speed - Effective: 2,2x - 6x
I 13:55:48 Verifying Session 1 of 1... (1 Track, LBA: 0 - 11921727)
I 13:55:48 Verifying Track 1 of 1... (MODE1/2048, LBA: 0 - 11921727)
W 14:04:40 Failed to Read Sectors 3726976 - 3727007 - Reason: L-EC Uncorrectable Error
W 14:04:50 Failed to Read Sector 3726976 - Reason: L-EC Uncorrectable Error
W 14:04:50 Sector 3726976 maps to File: \BDMV\STREAM\00003.m2ts
W 14:11:44 Retrying (1)...
W 14:11:51 Retry Failed - Reason: L-EC Uncorrectable Error
W 14:12:16 Retrying (2)...
W 14:12:26 Retry Failed - Reason: L-EC Uncorrectable Error
W 14:12:43 Retrying (3)...
W 14:12:52 Retry Failed - Reason: L-EC Uncorrectable Error
E 14:12:57 Failed to Read Sector 3726976 - Reason: L-EC Uncorrectable Error
E 14:12:57 Sector 3726976 maps to File: \BDMV\STREAM\00003.m2ts
E 14:12:58 Failed to Verify Sectors!
I 14:12:59 Exporting Graph Data...
I 14:12:59 Graph Data File: C:\Users\User\AppData\Roaming\ImgBurn\Graph Data Files\TSSTcorp_BDDVDW_SE-506BB_TS00_23-ОКТЯБРЬ-2016-Г-_13-20_CMCMAG-BA5-000_1x.ibg
I 14:12:59 Export Successfully Completed!
E 14:12:59 Operation Failed! - Duration: 00:17:10
I 14:12:59 Average Verify Rate: 7 243 KiB/s (1.6x) - Maximum Verify Rate: 17 648 KiB/s (4.0x)
I 14:13:05 Close Request Acknowledged
I 14:13:05 Closing Down...
I 14:13:05 Shutting down SPTI...
I 14:13:06 ImgBurn closed!