Bisync: Rename failed, method not allowed?

Here are the last 4, probably more redacted than necessary, but without any deletes:

2024/04/28 14:26:57 NOTICE: - Path1             Renaming Path1 copy                         - idrive-sync-crypt:/code/blah/a4/lifeco-jms/task1/core/target/classes/service/core/AbstractQuotationService.class.conflict1
2024/04/28 14:26:57 DEBUG : : updated backup-dir for Path1
2024/04/28 14:26:57 DEBUG : >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
2024/04/28 14:26:57 DEBUG : HTTP REQUEST (req REDACTED11)
2024/04/28 14:26:57 DEBUG : HEAD /sync/REDACTEDA HTTP/1.1
Host: x3k6.ie.idrivee2-50.com
User-Agent: rclone/v1.66.0
Authorization: XXXX
X-Amz-Content-Sha256: REDACTED1
X-Amz-Date: REDACTED2

2024/04/28 14:26:57 DEBUG : >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
2024/04/28 14:26:57 DEBUG : <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
2024/04/28 14:26:57 DEBUG : HTTP RESPONSE (req REDACTED11)
2024/04/28 14:26:57 DEBUG : HTTP/1.1 200 OK
Content-Length: 1318
Accept-Ranges: bytes
Connection: keep-alive
Content-Security-Policy: block-all-mixed-content
Content-Type: application/octet-stream
Date: Sun, 28 Apr 2024 13:26:57 GMT
Etag: "REDACTED3"
Last-Modified: Wed, 24 Apr 2024 17:09:25 GMT
Server: nginx
Strict-Transport-Security: max-age=31536000; includeSubDomains
Vary: Origin
Vary: Accept-Encoding
X-Amz-Meta-Erid: 4
X-Amz-Meta-Md5chksum: REDACTED4
X-Amz-Meta-Mtime: REDACTED5
X-Amz-Request-Id: REDACTED6
X-Amz-Server-Side-Encryption: aws:kms
X-Amz-Server-Side-Encryption-Aws-Kms-Key-Id: arn:aws:kms:abcd_xx_idrivee2-50_com
X-Amz-Version-Id: REDACTED7
X-Content-Type-Options: nosniff
X-Xss-Protection: 1; mode=block

2024/04/28 14:26:57 DEBUG : <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
2024/04/28 14:26:57 DEBUG : >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
2024/04/28 14:26:57 DEBUG : HTTP REQUEST (req REDACTED12)
2024/04/28 14:26:57 DEBUG : HEAD /sync/REDACTEDA/REDACTEDB HTTP/1.1
Host: abcd.xx.idrivee2-50.com
User-Agent: rclone/v1.66.0
Authorization: XXXX
X-Amz-Content-Sha256: REDACTED1
X-Amz-Date: REDACTED2

2024/04/28 14:26:57 DEBUG : >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
2024/04/28 14:26:57 DEBUG : <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
2024/04/28 14:26:57 DEBUG : HTTP RESPONSE (req REDACTED12)
2024/04/28 14:26:57 DEBUG : HTTP/1.1 405 Method Not Allowed
Accept-Ranges: bytes
Connection: keep-alive
Content-Security-Policy: block-all-mixed-content
Date: Sun, 28 Apr 2024 13:26:57 GMT
Server: nginx
Strict-Transport-Security: max-age=31536000; includeSubDomains
Vary: Origin
Vary: Accept-Encoding
X-Amz-Delete-Marker: true
X-Amz-Request-Id: REDACTED10
X-Amz-Version-Id: REDACTED9
X-Content-Type-Options: nosniff
X-Xss-Protection: 1; mode=block
Content-Length: 0

2024/04/28 14:26:57 DEBUG : <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
2024/04/28 14:26:57 DEBUG : Lock file removed: /home/saltysyncs/.cache/rclone/bisync/idrive-sync-crypt_..local__home_saltysyncs_sync.lck
2024/04/28 14:26:57 ERROR : Bisync critical error: idrive-sync-crypt:/ rename failed for idrive-sync-crypt:/code/blah/a4/lifeco-jms/task1/core/target/classes/service/core/AbstractQuotationService.class: MethodNotAllowed: Method Not Allowed
	status code: 405, request id: REDACTED10, host id: 
2024/04/28 14:26:57 ERROR : Bisync aborted. Must run --resync to recover.

This is everything that is in that directory on the local and remote secret:

 ~/sync/code/blah/a4/lifeco-jms/task1/core/target/classes/service/core  ls
AbstractQuotationService.class  ClientInfo.class  Quotation.class
~/  rclone ls idrive-sync-crypt:/code/blah/a4/lifeco-jms/task1/core/target/classes/service/core/
      853 ClientInfo.class
      519 Quotation.class
     1270 AbstractQuotationService.class