getting checksum error in ESP32 board. - esp_image: Checksum failed.

[kesha.modhia]

problem

facing this error in ESP32 board after working on the same image for 6-7 months.

ets Jun 8 2016 00:22:57

rst:0x3 (SW_RESET),boot:0x12 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:7436
ho 0 tail 12 room 4
load:0x40078000,len:13212
load:0x40080400,len:4568
entry 0x400806f4
I (56) boot: ESP-IDF v4.2.1-64-gd9ec7df393 2nd stage bootloader
I (56) boot: compile time 14:36:31
I (56) boot: chip revision: 1
I (61) boot_comm: chip revision: 1, min. bootloader chip revision: 0
I (68) boot.esp32: SPI Speed : 40MHz
I (73) boot.esp32: SPI Mode : DIO
I (77) boot.esp32: SPI Flash Size : 4MB
I (82) boot: Enabling RNG early entropy source...
I (87) boot: Partition Table:
I (91) boot: ## Label Usage Type ST Offset Length
I (98) boot: 0 nvs WiFi data 01 02 00009000 00004000
I (105) boot: 1 otadata OTA data 01 00 0000d000 00002000
I (113) boot: 2 phy_init RF data 01 01 0000f000 00001000
I (120) boot: 3 factory factory app 00 00 00010000 001af000
I (128) boot: 4 ota_0 OTA app 00 10 001c0000 001af000
I (136) boot: 5 storage Unknown data 01 82 00380000 00080000
I (143) boot: End of partition table
I (147) boot: Defaulting to factory image
I (152) boot_comm: chip revision: 1, min. application chip revision: 0
I (159) esp_image: segment 0: paddr=0x00010020 vaddr=0x3f400020 size=0x209e8 (133608) map
I (219) esp_image: segment 1: paddr=0x00030a10 vaddr=0x3ffb0000 size=0x01ea0 ( 7840) load
I (223) esp_image: segment 2: paddr=0x000328b8 vaddr=0x40080000 size=0x0a53c ( 42300) load
I (245) esp_image: segment 3: paddr=0x0003cdfc vaddr=0x00000000 size=0x0321c ( 12828)
I (250) esp_image: segment 4: paddr=0x00040020 vaddr=0x400d0020 size=0x89484 (562308) map
E (465) esp_image: Checksum failed. Calculated 0x8b read 0x87
E (465) boot: Factory app partition is not bootable
E (466) esp_image: image at 0x1c0000 has invalid magic byte
W (472) esp_image: image at 0x1c0000 has invalid SPI mode 255
W (478) esp_image: image at 0x1c0000 has invalid SPI size 15
E (485) boot: OTA app partition slot 0 is not bootable
E (491) boot: No bootable app partitions in the partition table

ESP module- esp32