[Bug] Anthropic API Error: Internal Server Error (500)

Bug Description
I used to have many issues like API Error 500:
API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011Ca5jjexcZqhDG7NRx3LdA"}

Environment Info

• Platform: darwin
• Terminal: vscode
• Version: 2.1.84
• Feedback ID: 5f74288e-4383-4083-b66e-72323332562c

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/rodrigolabarile/.local/share/claude/versions/2.1.84 (expected in multi-process scenarios)\n    at Jm_ (/$bunfs/root/src/entrypoints/cli.js:2740:2168)\n    at tlT (/$bunfs/root/src/entrypoints/cli.js:2740:1326)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-13T18:56:43.099Z"},{"error":"Error: ensureToolResultPairing: repaired missing tool_result blocks (89 -> 89 messages). Message structure: [0] user; [1] assistant(id=msg_01Q2oz1oQo8uUP8nCKXVnBio, tool_uses=[toolu_018NrWFscD3YGS5iaaZXHxpP]); [2] user(tool_results=[toolu_018NrWFscD3YGS5iaaZXHxpP]); [3] assistant(id=msg_01CQEcfbMPu18VWPRj1Pf7H2, tool_uses=[toolu_018yh8N5GU9Amsowsndbu29q]); [4] user(tool_results=[toolu_018yh8N5GU9Amsowsndbu29q]); [5] assistant(id=msg_01HLdajTWk2gpBpF27Ta5Phh, tool_uses=[toolu_01K98aesfmzqcm5iQVBMxohb,toolu_01A1zni2CP71XMJKTzSDtsek]); [6] user(tool_results=[toolu_01A1zni2CP71XMJKTzSDtsek,toolu_01K98aesfmzqcm5iQVBMxohb]); [7] assistant(id=msg_01FHGJb5t8Z8WZKxGUr4tpFh, tool_uses=[]); [8] user; [9] assistant(id=msg_01GXdcP4B4WAPp68zKm9ruQD, tool_uses=[toolu_016wTNFsDzVMp3pvhuKMzVKs,toolu_01QdPUVGrCw8uVkWo3CypXV7,toolu_019ByK4kgKwJXf96dHwBKdwo,toolu_01S84ySysqJi6ZUuypTidvzt]); [10] user(tool_results=[toolu_016wTNFsDzVMp3pvhuKMzVKs,toolu_01QdPUVGrCw8uVkWo3CypXV7,toolu_019ByK4kgKwJXf96dHwBKdwo,toolu_01S84ySysqJi6ZUuypTidvzt]); [11] assistant(id=msg_01NpbbJndSpLiv2V5THbUNxe, tool_uses=[toolu_01ArZJdYGbygVNXgW2b7epLk]); [12] user(tool_results=[toolu_01ArZJdYGbygVNXgW2b7epLk]); [13] assistant(id=msg_01RB9FWDpVrfNfCjjAHqHAKH, tool_uses=[toolu_01L6utb4QcRt2BxxdpvmcYBn]); [14] user(tool_results=[toolu_01L6utb4QcRt2BxxdpvmcYBn]); [15] assistant(id=msg_01BozMDUsCkejedCTTUGxk7J, tool_uses=[toolu_01ARqhK2mD7DnMtoCRjU69tL]); [16] user(tool_results=[toolu_01ARqhK2mD7DnMtoCRjU69tL]); [17] assistant(id=msg_01EdY6tdT2NwBhPVatMmDsZb, tool_uses=[toolu_017gDKkBYQn1VhfxaY1qXzym]); [18] user(tool_results=[toolu_017gDKkBYQn1VhfxaY1qXzym]); [19] assistant(id=msg_01EjNwDQJhdiVu3gKuWuHQqx, tool_uses=[toolu_016z4d6T3nF1dZzuSMDccZFQ]); [20] user(tool_results=[toolu_016z4d6T3nF1dZzuSMDccZFQ]); [21] assistant(id=msg_011j96kJsCHEg2h1DENXTHji, tool_uses=[toolu_01DFHDhRCdrFJfkEnf5dSrQs]); [22] user(tool_results=[toolu_01DFHDhRCdrFJfkEnf5dSrQs]); [23] assistant(id=msg_016npfnAE5DVbDteA51A57wH, tool_uses=[toolu_01BckhSjHnicXsDhJ3itW4V1]); [24] user(tool_results=[toolu_01BckhSjHnicXsDhJ3itW4V1]); [25] assistant(id=msg_01Dzem1Qs7qQFnoBE7qHJnHG, tool_uses=[toolu_01J18Grq7Tnow3oZEtZ5hGqA,toolu_01Xbvegpta9pTqxvwEk8PYfQ,toolu_01WCqr6jHoARUNqUVfbZZCdG,toolu_01CjV1NGTPRwmdaPaf5tksb8]); [26] user(tool_results=[toolu_01J18Grq7Tnow3oZEtZ5hGqA,toolu_01Xbvegpta9pTqxvwEk8PYfQ,toolu_01WCqr6jHoARUNqUVfbZZCdG,toolu_01CjV1NGTPRwmdaPaf5tksb8]); [27] assistant(id=msg_019fcsNVJuHzEbFK5KkVvTUB, tool_uses=[]); [28] user; [29] assistant(id=msg_01XmdM5fmECg5DjqDAqTteoS, tool_uses=[toolu_014DspXG9vGmHnicHQVcguRa]); [30] user(tool_results=[toolu_014DspXG9vGmHnicHQVcguRa]); [31] assistant(id=msg_019biVp3wnnBQHzEF1r5orgm, tool_uses=[toolu_01PJQxynuzEH3gdXc7uJZ1GL,toolu_0197jd3MtJCQps4Kv1mANfbx,toolu_01CQG8hXYx9pt1gxWarDLpit,toolu_01MDmWLNS4xDhmkjRL1Y29BB,toolu_01K51ZvhyY7ELWrEVSiQCbEN,toolu_0124SaZrd36XgNov9WerNTLR,toolu_01XrfTiFiPLTfVCX7tFegiuu,toolu_0118HVHaqoFNmPbRtGSGPrMx]); [32] user(tool_results=[toolu_01PJQxynuzEH3gdXc7uJZ1GL,toolu_0197jd3MtJCQps4Kv1mANfbx,toolu_01CQG8hXYx9pt1gxWarDLpit,toolu_01MDmWLNS4xDhmkjRL1Y29BB,toolu_01K51ZvhyY7ELWrEVSiQCbEN,toolu_0124SaZrd36XgNov9WerNTLR,toolu_01XrfTiFiPLTfVCX7tFegiuu,toolu_0118HVHaqoFNmPbRtGSGPrMx]); [33] assistant(id=msg_01KFgXdKViT6qCYnfqx8jAmm, tool_uses=[toolu_01GEQf67TPazvVuTBpVN8C5x]); [34] user(tool_results=[toolu_01GEQf67TPazvVuTBpVN8C5x]); [35] assistant(id=msg_01SobEwZf9AbAywb9cE5AYhq, tool_uses=[toolu_01HdVr7xts9zxTAtmzHaaXVg,toolu_017wurRv5FPkPMvBpZACCxtS]); [36] user(tool_results=[toolu_01HdVr7xts9zxTAtmzHaaXVg,toolu_017wurRv5FPkPMvBpZACCxtS]); [37] assistant(id=msg_01Vw5WWUenGTvELj86ZcjiQh, tool_uses=[toolu_01Uci6QpeheBCFq8eqi9ccMU,toolu_01Ks78Nt9TBzxd6sBEChnBkw,toolu_01Nms3Q8k54pkbFHTNUsC3kP]); [38] user(tool_results=[toolu_01Uci6QpeheBCFq8eqi9ccMU,toolu_01Ks78Nt9TBzxd6sBEChnBkw,toolu_01Nms3Q8k54pkbFHTNUsC3kP]); [39] assistant(id=msg_014eWkJ8yydAoYRWPnWwfCUN, tool_uses=[toolu_014YugFWAHZMNuWLJK5QrwZq,toolu_01VjrXXymug4XMsQpqQUNPJN]); [40] user(tool_results=[toolu_014YugFWAHZMNuWLJK5QrwZq,toolu_01VjrXXymug4XMsQpqQUNPJN]); [41] assistant(id=msg_01DBvW9Kt1bCyp5PNepwWMnH, tool_uses=[toolu_01CtMfFrp1YSBDaPQw5eLZEM,toolu_01BSnG6F998swhNqEYV972DT]); [42] user(tool_results=[toolu_01CtMfFrp1YSBDaPQw5eLZEM,toolu_01BSnG6F998swhNqEYV972DT]); [43] assistant(id=msg_013N8HmCNjPqcHgMJ1NLT57j, tool_uses=[toolu_01VG7makrKqDrRQzjs1sbmvD,toolu_019gKq9kBkUWuFpcoBJmdv4m]); [44] user(tool_results=[toolu_01VG7makrKqDrRQzjs1sbmvD,toolu_019gKq9kBkUWuFpcoBJmdv4m]); [45] assistant(id=msg_01Jqopvx1LYKkkf7H2EQwp7A, tool_uses=[toolu_01TLw6ojJMG5MKbw3wig3RQt,toolu_0193ZBsb2Fv2MmnCe6HMcpwq]); [46] user(tool_results=[toolu_01TLw6ojJMG5MKbw3wig3RQt,toolu_0193ZBsb2Fv2MmnCe6HMcpwq]); [47] assistant(id=msg_01PK9wFRAMsebRc2ZDvS5w9b, tool_uses=[toolu_01JxDXKUnE7XUsLcgadc98Bg,toolu_01Fb8PL7x8vTGaRiqWZWwWfE]); [48] user(tool_results=[toolu_01JxDXKUnE7XUsLc…

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